./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/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 d3ded6f4470c26b608997f650ebe66ef1cf6f845 .............................................................................................................................................................................................................................................................................................................. 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 0.1.24-cad4683 [2019-10-22 08:58:36,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:36,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:36,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:36,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:36,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:36,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:36,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:36,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:36,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:36,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:36,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:36,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:36,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:36,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:36,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:36,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:36,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:36,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:36,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:36,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:36,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:36,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:36,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:36,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:36,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:36,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:36,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:36,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:36,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:36,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:36,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:36,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:36,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:36,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:36,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:36,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:36,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:36,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:36,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:36,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:36,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:58:36,129 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:36,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:36,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:36,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:36,131 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:36,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:36,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:36,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:36,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:36,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:58:36,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:36,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:58:36,133 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:58:36,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:36,133 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:36,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:58:36,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:36,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:36,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:36,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:36,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:36,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:36,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:36,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:58:36,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:36,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:36,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:58:36,136 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/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/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 -> d3ded6f4470c26b608997f650ebe66ef1cf6f845 [2019-10-22 08:58:36,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:36,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:36,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:36,174 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:36,174 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:36,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2019-10-22 08:58:36,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/data/488dbaf49/be40bab1d35f48d2805ea136b7a45a28/FLAG27046a0ed [2019-10-22 08:58:36,602 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:36,603 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1.c [2019-10-22 08:58:36,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/data/488dbaf49/be40bab1d35f48d2805ea136b7a45a28/FLAG27046a0ed [2019-10-22 08:58:36,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/data/488dbaf49/be40bab1d35f48d2805ea136b7a45a28 [2019-10-22 08:58:36,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:36,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:36,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:36,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:36,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:36,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55697393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36, skipping insertion in model container [2019-10-22 08:58:36,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,636 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:36,649 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:36,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:36,772 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:36,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:36,850 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:36,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36 WrapperNode [2019-10-22 08:58:36,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:36,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:36,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:36,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:36,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:36,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:36,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:36,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:36,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... [2019-10-22 08:58:36,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:36,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:36,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:36,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:36,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/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 [2019-10-22 08:58:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure r1 [2019-10-22 08:58:36,964 INFO L138 BoogieDeclarations]: Found implementation of procedure r1 [2019-10-22 08:58:37,136 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:37,137 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:58:37,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:37 BoogieIcfgContainer [2019-10-22 08:58:37,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:37,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:37,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:37,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:37,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:36" (1/3) ... [2019-10-22 08:58:37,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36757105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:37, skipping insertion in model container [2019-10-22 08:58:37,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:36" (2/3) ... [2019-10-22 08:58:37,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36757105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:37, skipping insertion in model container [2019-10-22 08:58:37,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:37" (3/3) ... [2019-10-22 08:58:37,147 INFO L109 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex1.c [2019-10-22 08:58:37,155 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:37,162 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 08:58:37,172 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 08:58:37,194 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:37,194 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:37,195 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:37,195 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:37,195 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:37,195 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:37,195 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:37,195 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-22 08:58:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:58:37,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:37,217 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:58:37,219 INFO L410 AbstractCegarLoop]: === Iteration 1 === [r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:37,225 INFO L82 PathProgramCache]: Analyzing trace with hash 920915409, now seen corresponding path program 1 times [2019-10-22 08:58:37,232 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:37,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465487123] [2019-10-22 08:58:37,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:37,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:37,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:37,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465487123] [2019-10-22 08:58:37,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:37,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:58:37,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169331977] [2019-10-22 08:58:37,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:58:37,389 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:58:37,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:58:37,403 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2019-10-22 08:58:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:37,539 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-10-22 08:58:37,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:37,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-10-22 08:58:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:37,552 INFO L225 Difference]: With dead ends: 31 [2019-10-22 08:58:37,553 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 08:58:37,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 08:58:37,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 08:58:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:58:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-22 08:58:37,593 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2019-10-22 08:58:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:37,594 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-22 08:58:37,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:58:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-22 08:58:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:58:37,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:37,595 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:37,595 INFO L410 AbstractCegarLoop]: === Iteration 2 === [r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1516393339, now seen corresponding path program 1 times [2019-10-22 08:58:37,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:37,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692594086] [2019-10-22 08:58:37,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:37,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:37,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:37,641 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692594086] [2019-10-22 08:58:37,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:37,642 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:58:37,642 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124113851] [2019-10-22 08:58:37,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:58:37,643 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:37,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:58:37,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:58:37,644 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-10-22 08:58:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:37,737 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2019-10-22 08:58:37,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:58:37,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 08:58:37,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:37,739 INFO L225 Difference]: With dead ends: 31 [2019-10-22 08:58:37,739 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:58:37,740 INFO L600 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 [2019-10-22 08:58:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:58:37,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2019-10-22 08:58:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 08:58:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-10-22 08:58:37,746 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2019-10-22 08:58:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:37,747 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-10-22 08:58:37,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:58:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-10-22 08:58:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:58:37,747 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:37,748 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:37,748 INFO L410 AbstractCegarLoop]: === Iteration 3 === [r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:58:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:37,748 INFO L82 PathProgramCache]: Analyzing trace with hash 236446803, now seen corresponding path program 1 times [2019-10-22 08:58:37,749 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:37,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097910267] [2019-10-22 08:58:37,749 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:37,749 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:37,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:37,789 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:37,789 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:58:37,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:37 BoogieIcfgContainer [2019-10-22 08:58:37,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:37,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:37,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:37,813 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:37,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:37" (3/4) ... [2019-10-22 08:58:37,816 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:58:37,853 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_73e00b34-50c3-443f-b1e1-0129a3e560d7/bin/uautomizer/witness.graphml [2019-10-22 08:58:37,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:37,855 INFO L168 Benchmark]: Toolchain (without parser) took 1233.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -124.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:37,856 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:37,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:37,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:37,857 INFO L168 Benchmark]: Boogie Preprocessor took 22.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:37,857 INFO L168 Benchmark]: RCFGBuilder took 235.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:37,858 INFO L168 Benchmark]: TraceAbstraction took 673.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:37,859 INFO L168 Benchmark]: Witness Printer took 40.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:37,862 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 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 235.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 673.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int ls = __VERIFIER_nondet_int(); [L27] COND TRUE ls >= 0 [L22] CALL r1(ls,0) VAL [\old(a)=0, \old(ls)=2147483647] [L14] COND FALSE !(ls == 0) VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls-1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls+1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 61 SDslu, 50 SDs, 0 SdLazy, 96 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 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...