./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Singapore_v2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Singapore_v2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/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 64dec40380a4996c8a1a20fecf77593fe0e4519c ................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-29 20:00:39,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:00:39,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:00:39,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:00:39,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:00:39,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:00:39,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:00:39,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:00:39,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:00:40,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:00:40,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:00:40,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:00:40,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:00:40,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:00:40,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:00:40,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:00:40,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:00:40,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:00:40,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:00:40,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:00:40,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:00:40,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:00:40,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:00:40,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:00:40,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:00:40,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:00:40,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:00:40,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:00:40,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:00:40,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:00:40,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:00:40,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:00:40,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:00:40,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:00:40,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:00:40,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:00:40,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:00:40,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:00:40,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:00:40,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:00:40,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:00:40,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 20:00:40,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:00:40,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:00:40,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:00:40,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:00:40,108 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:00:40,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:00:40,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:00:40,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:00:40,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:00:40,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:00:40,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:00:40,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:00:40,110 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:00:40,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:00:40,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:00:40,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:00:40,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:00:40,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:00:40,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:00:40,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:00:40,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:00:40,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:00:40,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:00:40,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:00:40,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:00:40,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:00:40,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:00:40,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:00:40,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64dec40380a4996c8a1a20fecf77593fe0e4519c [2020-11-29 20:00:40,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:00:40,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:00:40,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:00:40,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:00:40,445 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:00:40,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Singapore_v2.c [2020-11-29 20:00:40,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/data/4200e171c/c6c8e3b1275242b0a95d40d30d5aa710/FLAG7b8db6590 [2020-11-29 20:00:41,055 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:00:41,056 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/sv-benchmarks/c/termination-crafted/Singapore_v2.c [2020-11-29 20:00:41,062 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/data/4200e171c/c6c8e3b1275242b0a95d40d30d5aa710/FLAG7b8db6590 [2020-11-29 20:00:41,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/data/4200e171c/c6c8e3b1275242b0a95d40d30d5aa710 [2020-11-29 20:00:41,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:00:41,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:00:41,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:41,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:00:41,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:00:41,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474f0fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41, skipping insertion in model container [2020-11-29 20:00:41,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:00:41,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:00:41,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:41,661 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:00:41,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:41,685 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:00:41,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41 WrapperNode [2020-11-29 20:00:41,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:41,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:41,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:00:41,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:00:41,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:41,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:00:41,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:00:41,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:00:41,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... [2020-11-29 20:00:41,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:00:41,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:00:41,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:00:41,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:00:41,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/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 [2020-11-29 20:00:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:00:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:00:42,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:00:42,059 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:00:42,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:42 BoogieIcfgContainer [2020-11-29 20:00:42,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:00:42,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:00:42,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:00:42,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:00:42,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:00:41" (1/3) ... [2020-11-29 20:00:42,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea4ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:42, skipping insertion in model container [2020-11-29 20:00:42,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:41" (2/3) ... [2020-11-29 20:00:42,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea4ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:42, skipping insertion in model container [2020-11-29 20:00:42,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:42" (3/3) ... [2020-11-29 20:00:42,082 INFO L111 eAbstractionObserver]: Analyzing ICFG Singapore_v2.c [2020-11-29 20:00:42,093 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:00:42,106 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 20:00:42,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 20:00:42,141 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:00:42,142 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:00:42,142 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:00:42,142 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:00:42,142 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:00:42,143 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:00:42,143 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:00:42,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:00:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-29 20:00:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-29 20:00:42,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:42,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-29 20:00:42,163 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:00:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:42,169 INFO L82 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2020-11-29 20:00:42,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:42,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082147821] [2020-11-29 20:00:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:00:42,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:00:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:00:42,270 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:00:42,285 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:00:42,286 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:00:42,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:00:42,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:00:42 BoogieIcfgContainer [2020-11-29 20:00:42,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:00:42,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:00:42,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:00:42,303 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:00:42,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:42" (3/4) ... [2020-11-29 20:00:42,306 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:00:42,338 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_004f31d1-84bf-45b7-8fd6-68ffdc5beb28/bin/uautomizer/witness.graphml [2020-11-29 20:00:42,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:00:42,340 INFO L168 Benchmark]: Toolchain (without parser) took 909.34 ms. Allocated memory is still 83.9 MB. Free memory was 52.5 MB in the beginning and 38.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:42,341 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 83.9 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:42,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.05 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 62.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:42,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.70 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 61.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:42,343 INFO L168 Benchmark]: Boogie Preprocessor took 17.39 ms. Allocated memory is still 83.9 MB. Free memory was 61.4 MB in the beginning and 60.4 MB in the end (delta: 995.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:42,344 INFO L168 Benchmark]: RCFGBuilder took 326.95 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 50.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:42,344 INFO L168 Benchmark]: TraceAbstraction took 238.35 ms. Allocated memory is still 83.9 MB. Free memory was 50.2 MB in the beginning and 39.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:42,345 INFO L168 Benchmark]: Witness Printer took 35.39 ms. Allocated memory is still 83.9 MB. Free memory was 39.5 MB in the beginning and 38.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:42,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 83.9 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.05 ms. Allocated memory is still 83.9 MB. Free memory was 52.4 MB in the beginning and 62.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.70 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 61.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.39 ms. Allocated memory is still 83.9 MB. Free memory was 61.4 MB in the beginning and 60.4 MB in the end (delta: 995.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 326.95 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 50.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 238.35 ms. Allocated memory is still 83.9 MB. Free memory was 50.2 MB in the beginning and 39.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 35.39 ms. Allocated memory is still 83.9 MB. Free memory was 39.5 MB in the beginning and 38.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...