./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.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_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/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 46206f7a86b26e5772618ef155399955c07418b5 ................................................................................................................................................................................................................................................................................................................ 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 [2020-11-30 00:20:49,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:20:49,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:20:49,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:20:49,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:20:49,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:20:49,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:20:49,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:20:49,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:20:49,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:20:49,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:20:49,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:20:49,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:20:49,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:20:49,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:20:49,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:20:49,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:20:49,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:20:49,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:20:49,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:20:49,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:20:49,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:20:49,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:20:49,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:20:49,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:20:49,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:20:49,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:20:49,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:20:49,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:20:49,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:20:49,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:20:49,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:20:50,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:20:50,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:20:50,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:20:50,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:20:50,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:20:50,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:20:50,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:20:50,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:20:50,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:20:50,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-30 00:20:50,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:20:50,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:20:50,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:20:50,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:20:50,066 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:20:50,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:20:50,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:20:50,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:20:50,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:20:50,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:20:50,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:20:50,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:20:50,070 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 00:20:50,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:20:50,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:20:50,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:20:50,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:20:50,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:20:50,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:20:50,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:20:50,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:20:50,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:20:50,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:20:50,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:20:50,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:20:50,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:20:50,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:20:50,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:20:50,074 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_22ba0ee9-c30f-4462-b2c4-af5bea288158/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46206f7a86b26e5772618ef155399955c07418b5 [2020-11-30 00:20:50,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:20:50,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:20:50,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:20:50,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:20:50,372 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:20:50,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2020-11-30 00:20:50,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/data/bea4b9e1b/5e7089651216495cba3e9018522f2c48/FLAG448ee5442 [2020-11-30 00:20:51,084 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:20:51,085 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2020-11-30 00:20:51,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/data/bea4b9e1b/5e7089651216495cba3e9018522f2c48/FLAG448ee5442 [2020-11-30 00:20:51,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/data/bea4b9e1b/5e7089651216495cba3e9018522f2c48 [2020-11-30 00:20:51,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:20:51,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:20:51,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:51,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:20:51,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:20:51,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a31b0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51, skipping insertion in model container [2020-11-30 00:20:51,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:20:51,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:20:51,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:51,703 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:20:51,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:51,760 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:20:51,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51 WrapperNode [2020-11-30 00:20:51,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:51,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:51,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:20:51,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:20:51,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:51,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:20:51,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:20:51,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:20:51,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... [2020-11-30 00:20:51,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:20:51,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:20:51,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:20:51,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:20:51,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/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 [2020-11-30 00:20:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:20:51,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:20:52,206 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:20:52,207 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:20:52,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:52 BoogieIcfgContainer [2020-11-30 00:20:52,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:20:52,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:20:52,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:20:52,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:20:52,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:20:51" (1/3) ... [2020-11-30 00:20:52,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a9562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:52, skipping insertion in model container [2020-11-30 00:20:52,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:51" (2/3) ... [2020-11-30 00:20:52,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a9562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:52, skipping insertion in model container [2020-11-30 00:20:52,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:52" (3/3) ... [2020-11-30 00:20:52,219 INFO L111 eAbstractionObserver]: Analyzing ICFG Toulouse-BranchesToLoop-1.c [2020-11-30 00:20:52,246 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:20:52,251 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 00:20:52,284 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 00:20:52,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:20:52,341 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:20:52,341 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:20:52,342 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:20:52,342 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:20:52,342 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:20:52,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:20:52,343 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:20:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-30 00:20:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:20:52,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:52,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 00:20:52,376 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash 957637, now seen corresponding path program 1 times [2020-11-30 00:20:52,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:52,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351575519] [2020-11-30 00:20:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:52,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351575519] [2020-11-30 00:20:52,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:52,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:20:52,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738610431] [2020-11-30 00:20:52,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:20:52,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:52,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:20:52,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:20:52,647 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-11-30 00:20:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:52,798 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-30 00:20:52,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:20:52,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-30 00:20:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:52,811 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:20:52,811 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 00:20:52,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:20:52,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 00:20:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 00:20:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:20:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-30 00:20:52,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-11-30 00:20:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:52,860 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-30 00:20:52,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:20:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-30 00:20:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:20:52,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:52,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:20:52,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:20:52,862 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash 29686796, now seen corresponding path program 1 times [2020-11-30 00:20:52,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:52,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036485081] [2020-11-30 00:20:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:52,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036485081] [2020-11-30 00:20:52,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:52,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:20:52,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639011937] [2020-11-30 00:20:52,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:20:52,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:20:52,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:20:52,951 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2020-11-30 00:20:53,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:53,043 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-11-30 00:20:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:20:53,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 00:20:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:53,045 INFO L225 Difference]: With dead ends: 14 [2020-11-30 00:20:53,045 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 00:20:53,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:20:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 00:20:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 00:20:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 00:20:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-30 00:20:53,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2020-11-30 00:20:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:53,051 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-30 00:20:53,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:20:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-30 00:20:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:20:53,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:53,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:20:53,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:20:53,054 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:20:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash 29746378, now seen corresponding path program 1 times [2020-11-30 00:20:53,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:53,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130570583] [2020-11-30 00:20:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:53,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:53,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:53,092 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:53,092 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:20:53,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:20:53,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:20:53 BoogieIcfgContainer [2020-11-30 00:20:53,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:20:53,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:20:53,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:20:53,114 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:20:53,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:52" (3/4) ... [2020-11-30 00:20:53,117 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:20:53,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_22ba0ee9-c30f-4462-b2c4-af5bea288158/bin/uautomizer/witness.graphml [2020-11-30 00:20:53,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:20:53,176 INFO L168 Benchmark]: Toolchain (without parser) took 1716.82 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 66.7 MB in the beginning and 70.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:53,176 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:53,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.87 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 66.4 MB in the beginning and 114.4 MB in the end (delta: -48.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:53,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.16 ms. Allocated memory is still 136.3 MB. Free memory was 114.4 MB in the beginning and 113.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:53,178 INFO L168 Benchmark]: Boogie Preprocessor took 27.20 ms. Allocated memory is still 136.3 MB. Free memory was 113.2 MB in the beginning and 112.3 MB in the end (delta: 925.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:53,179 INFO L168 Benchmark]: RCFGBuilder took 376.52 ms. Allocated memory is still 136.3 MB. Free memory was 112.3 MB in the beginning and 102.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:53,179 INFO L168 Benchmark]: TraceAbstraction took 902.15 ms. Allocated memory is still 136.3 MB. Free memory was 102.4 MB in the beginning and 72.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:53,180 INFO L168 Benchmark]: Witness Printer took 59.81 ms. Allocated memory is still 136.3 MB. Free memory was 72.5 MB in the beginning and 71.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:53,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.87 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 66.4 MB in the beginning and 114.4 MB in the end (delta: -48.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.16 ms. Allocated memory is still 136.3 MB. Free memory was 114.4 MB in the beginning and 113.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.20 ms. Allocated memory is still 136.3 MB. Free memory was 113.2 MB in the beginning and 112.3 MB in the end (delta: 925.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 376.52 ms. Allocated memory is still 136.3 MB. Free memory was 112.3 MB in the beginning and 102.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 902.15 ms. Allocated memory is still 136.3 MB. Free memory was 102.4 MB in the beginning and 72.5 MB in the end (delta: 29.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.81 ms. Allocated memory is still 136.3 MB. Free memory was 72.5 MB in the beginning and 71.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x; [L15] int y; [L16] int z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND FALSE !(__VERIFIER_nondet_int() != 0) [L22] x = -1 [L24] COND TRUE y<100 && z<100 [L25] y+x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 24 SDslu, 3 SDs, 0 SdLazy, 31 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...