./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1b.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_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/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 c60f4fc7735ecf5946101193ab19b5917b1a9698 .................................................................................................................................................................................................................................. 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 [2020-11-28 03:11:30,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:30,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:30,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:30,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:30,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:30,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:30,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:30,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:30,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:30,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:30,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:30,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:30,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:30,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:30,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:30,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:30,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:30,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:30,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:30,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:30,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:30,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:30,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:30,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:30,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:30,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:30,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:30,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:30,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:30,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:30,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:30,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:30,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:30,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:30,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:30,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:30,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:30,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:30,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:30,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:30,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:11:30,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:30,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:30,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:30,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:30,901 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:30,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:30,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:11:30,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:30,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:30,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:11:30,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:30,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:11:30,904 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:11:30,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:11:30,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:30,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:11:30,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:30,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:30,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:30,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:30,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:30,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:30,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:30,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:11:30,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:30,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:11:30,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:11:30,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:30,909 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_c23a1312-9478-4126-b36d-b94d8d405394/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c60f4fc7735ecf5946101193ab19b5917b1a9698 [2020-11-28 03:11:31,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:31,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:31,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:31,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:31,267 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:31,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1b.c [2020-11-28 03:11:31,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/data/1e400afb7/0bf01ea45171416796eca09fced60e30/FLAG30e9160ff [2020-11-28 03:11:31,937 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:31,938 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/sv-benchmarks/c/termination-crafted-lit/GulavaniGulwani-CAV2008-Fig1b.c [2020-11-28 03:11:31,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/data/1e400afb7/0bf01ea45171416796eca09fced60e30/FLAG30e9160ff [2020-11-28 03:11:32,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/data/1e400afb7/0bf01ea45171416796eca09fced60e30 [2020-11-28 03:11:32,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:32,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:11:32,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:32,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:32,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:32,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5307b312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32, skipping insertion in model container [2020-11-28 03:11:32,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:32,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:32,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:32,585 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:32,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:32,638 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:32,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32 WrapperNode [2020-11-28 03:11:32,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:32,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:32,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:11:32,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:11:32,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:32,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:32,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:32,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:32,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... [2020-11-28 03:11:32,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:32,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:32,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:32,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:32,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/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 [2020-11-28 03:11:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:32,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:33,071 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:33,072 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:11:33,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:33 BoogieIcfgContainer [2020-11-28 03:11:33,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:33,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:33,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:33,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:33,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:32" (1/3) ... [2020-11-28 03:11:33,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c72c1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:33, skipping insertion in model container [2020-11-28 03:11:33,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:32" (2/3) ... [2020-11-28 03:11:33,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c72c1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:33, skipping insertion in model container [2020-11-28 03:11:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:33" (3/3) ... [2020-11-28 03:11:33,099 INFO L111 eAbstractionObserver]: Analyzing ICFG GulavaniGulwani-CAV2008-Fig1b.c [2020-11-28 03:11:33,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:33,133 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-28 03:11:33,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-28 03:11:33,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:33,222 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:11:33,222 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:33,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:33,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:33,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:33,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:33,223 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 03:11:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 03:11:33,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:33,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 03:11:33,249 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]=== [2020-11-28 03:11:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:33,260 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-28 03:11:33,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:33,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609123081] [2020-11-28 03:11:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:33,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:11:33,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:11:33,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:11:33,448 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:11:33,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:11:33,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:33 BoogieIcfgContainer [2020-11-28 03:11:33,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:33,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:33,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:33,480 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:33,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:33" (3/4) ... [2020-11-28 03:11:33,484 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:11:33,544 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c23a1312-9478-4126-b36d-b94d8d405394/bin/uautomizer/witness.graphml [2020-11-28 03:11:33,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:33,557 INFO L168 Benchmark]: Toolchain (without parser) took 1194.74 ms. Allocated memory was 79.7 MB in the beginning and 111.1 MB in the end (delta: 31.5 MB). Free memory was 46.0 MB in the beginning and 64.5 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:33,558 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 79.7 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:33,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.15 ms. Allocated memory was 79.7 MB in the beginning and 111.1 MB in the end (delta: 31.5 MB). Free memory was 45.7 MB in the beginning and 90.4 MB in the end (delta: -44.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:33,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.71 ms. Allocated memory is still 111.1 MB. Free memory was 90.4 MB in the beginning and 89.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:33,560 INFO L168 Benchmark]: Boogie Preprocessor took 23.06 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 88.1 MB in the end (delta: 866.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:33,563 INFO L168 Benchmark]: RCFGBuilder took 377.10 ms. Allocated memory is still 111.1 MB. Free memory was 88.1 MB in the beginning and 77.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:33,564 INFO L168 Benchmark]: TraceAbstraction took 400.51 ms. Allocated memory is still 111.1 MB. Free memory was 77.0 MB in the beginning and 66.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:33,565 INFO L168 Benchmark]: Witness Printer took 65.35 ms. Allocated memory is still 111.1 MB. Free memory was 66.0 MB in the beginning and 64.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:33,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 79.7 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.15 ms. Allocated memory was 79.7 MB in the beginning and 111.1 MB in the end (delta: 31.5 MB). Free memory was 45.7 MB in the beginning and 90.4 MB in the end (delta: -44.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.71 ms. Allocated memory is still 111.1 MB. Free memory was 90.4 MB in the beginning and 89.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.06 ms. Allocated memory is still 111.1 MB. Free memory was 89.0 MB in the beginning and 88.1 MB in the end (delta: 866.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 377.10 ms. Allocated memory is still 111.1 MB. Free memory was 88.1 MB in the beginning and 77.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 400.51 ms. Allocated memory is still 111.1 MB. Free memory was 77.0 MB in the beginning and 66.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 65.35 ms. Allocated memory is still 111.1 MB. Free memory was 66.0 MB in the beginning and 64.5 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: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, i, n, m; [L15] x = __VERIFIER_nondet_int() [L16] i = __VERIFIER_nondet_int() [L17] n = __VERIFIER_nondet_int() [L18] m = __VERIFIER_nondet_int() [L19] COND TRUE x < n [L20] i + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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, 3 NumberOfCodeBlocks, 3 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...