./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a920ed9b3f96020f8bcfe1e60b1075faad4206fc ....................................................................................................................................................................................................................................................................... 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 [2019-11-15 22:42:01,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:42:01,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:42:01,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:42:01,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:42:01,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:42:01,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:42:01,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:42:01,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:42:01,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:42:01,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:42:01,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:42:01,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:42:01,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:42:01,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:42:01,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:42:01,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:42:01,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:42:01,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:42:01,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:42:01,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:42:01,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:42:01,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:42:01,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:42:01,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:42:01,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:42:01,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:42:01,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:42:01,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:42:01,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:42:01,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:42:01,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:42:01,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:42:01,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:42:01,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:42:01,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:42:01,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:42:01,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:42:01,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:42:01,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:42:01,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:42:01,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-15 22:42:01,653 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:42:01,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:42:01,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:42:01,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:42:01,656 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:42:01,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:42:01,657 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:42:01,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:42:01,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:42:01,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:42:01,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:42:01,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:42:01,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:42:01,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:42:01,659 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 22:42:01,659 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:42:01,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:42:01,660 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:42:01,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:42:01,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:42:01,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:42:01,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:42:01,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:42:01,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:42:01,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:42:01,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:42:01,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:42:01,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:42:01,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:42:01,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:42:01,663 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_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a920ed9b3f96020f8bcfe1e60b1075faad4206fc [2019-11-15 22:42:01,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:42:01,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:42:01,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:42:01,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:42:01,717 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:42:01,718 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2019-11-15 22:42:01,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/data/3d70b780d/6dec27fcd5de4e17847ca4d04c94af79/FLAGd7dc40cb8 [2019-11-15 22:42:02,220 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:42:02,221 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2019-11-15 22:42:02,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/data/3d70b780d/6dec27fcd5de4e17847ca4d04c94af79/FLAGd7dc40cb8 [2019-11-15 22:42:02,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/data/3d70b780d/6dec27fcd5de4e17847ca4d04c94af79 [2019-11-15 22:42:02,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:42:02,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:42:02,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:42:02,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:42:02,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:42:02,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:42:02" (1/1) ... [2019-11-15 22:42:02,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a6bc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:02, skipping insertion in model container [2019-11-15 22:42:02,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:42:02" (1/1) ... [2019-11-15 22:42:02,622 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:42:02,639 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:42:02,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:42:02,893 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:42:03,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:42:03,042 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:42:03,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03 WrapperNode [2019-11-15 22:42:03,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:42:03,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:42:03,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:42:03,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:42:03,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:42:03,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:42:03,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:42:03,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:42:03,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... [2019-11-15 22:42:03,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:42:03,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:42:03,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:42:03,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:42:03,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/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 [2019-11-15 22:42:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:42:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:42:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-15 22:42:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-15 22:42:03,488 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:42:03,488 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 22:42:03,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:03 BoogieIcfgContainer [2019-11-15 22:42:03,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:42:03,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:42:03,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:42:03,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:42:03,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:42:02" (1/3) ... [2019-11-15 22:42:03,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f38d392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:42:03, skipping insertion in model container [2019-11-15 22:42:03,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:03" (2/3) ... [2019-11-15 22:42:03,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f38d392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:42:03, skipping insertion in model container [2019-11-15 22:42:03,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:03" (3/3) ... [2019-11-15 22:42:03,514 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o2-1.c [2019-11-15 22:42:03,526 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:42:03,534 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 22:42:03,558 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 22:42:03,593 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:42:03,594 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:42:03,595 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:42:03,596 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:42:03,596 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:42:03,596 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:42:03,596 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:42:03,597 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:42:03,622 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-15 22:42:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-15 22:42:03,629 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:03,630 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-15 22:42:03,632 INFO L410 AbstractCegarLoop]: === Iteration 1 === [idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 22:42:03,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:03,640 INFO L82 PathProgramCache]: Analyzing trace with hash 30579597, now seen corresponding path program 1 times [2019-11-15 22:42:03,649 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:03,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138976280] [2019-11-15 22:42:03,650 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:03,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:03,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:42:03,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138976280] [2019-11-15 22:42:03,829 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:42:03,830 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:42:03,830 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896052297] [2019-11-15 22:42:03,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:42:03,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:03,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:42:03,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:42:03,851 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-15 22:42:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:03,947 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-15 22:42:03,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:42:03,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-15 22:42:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:03,957 INFO L225 Difference]: With dead ends: 26 [2019-11-15 22:42:03,957 INFO L226 Difference]: Without dead ends: 16 [2019-11-15 22:42:03,960 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:42:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-15 22:42:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-15 22:42:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 22:42:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-15 22:42:04,005 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2019-11-15 22:42:04,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:04,005 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-15 22:42:04,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:42:04,006 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-15 22:42:04,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 22:42:04,006 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:04,007 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 22:42:04,007 INFO L410 AbstractCegarLoop]: === Iteration 2 === [idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 22:42:04,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:04,008 INFO L82 PathProgramCache]: Analyzing trace with hash 947967559, now seen corresponding path program 1 times [2019-11-15 22:42:04,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:04,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97753790] [2019-11-15 22:42:04,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:04,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:04,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:04,053 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:42:04,053 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:42:04,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:42:04 BoogieIcfgContainer [2019-11-15 22:42:04,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:42:04,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:42:04,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:42:04,076 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:42:04,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:03" (3/4) ... [2019-11-15 22:42:04,079 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 22:42:04,121 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e71b7acf-cdab-4ceb-90bd-e46f564460e2/bin/uautomizer/witness.graphml [2019-11-15 22:42:04,121 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:42:04,124 INFO L168 Benchmark]: Toolchain (without parser) took 1519.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -142.0 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:04,125 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:42:04,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:04,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.18 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. [2019-11-15 22:42:04,127 INFO L168 Benchmark]: Boogie Preprocessor took 28.36 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. [2019-11-15 22:42:04,128 INFO L168 Benchmark]: RCFGBuilder took 380.45 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: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:04,129 INFO L168 Benchmark]: TraceAbstraction took 584.33 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:04,129 INFO L168 Benchmark]: Witness Printer took 45.28 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:04,133 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 439.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.18 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 28.36 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. * RCFGBuilder took 380.45 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: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 584.33 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 45.28 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL id(input) VAL [\old(x)=-2147483648] [L5] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L6] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 31 SDslu, 22 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...