./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.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_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8b6afe20c2dca459418f82abcc5ff6699539f1e9 ........................................................................................................................................................................................................................................... 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 07:44:12,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:12,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:12,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:12,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:12,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:12,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:12,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:12,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:12,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:12,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:12,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:12,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:12,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:12,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:12,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:12,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:12,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:12,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:12,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:12,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:12,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:12,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:12,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:12,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:12,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:12,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:12,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:12,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:12,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:12,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:12,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:12,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:12,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:12,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:12,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:12,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:12,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:12,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:12,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:12,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:12,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:44:12,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:12,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:12,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:12,290 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:12,290 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:12,290 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:12,290 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:44:12,291 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:12,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:12,291 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:44:12,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:44:12,291 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:12,291 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:44:12,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:44:12,292 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:44:12,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:12,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:44:12,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:44:12,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:12,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:12,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:12,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:12,294 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:44:12,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:12,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:12,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:12,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:12,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:12,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:12,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:12,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:12,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:12,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:12,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:44:12,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:44:12,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:12,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:12,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:12,297 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b6afe20c2dca459418f82abcc5ff6699539f1e9 [2020-11-28 07:44:12,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:12,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:12,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:12,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:12,596 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:12,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.c [2020-11-28 07:44:12,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/data/3db8f9af1/e8942a4457e44ee19eaaa0084422c258/FLAGcfe026c0f [2020-11-28 07:44:13,161 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:13,161 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.c [2020-11-28 07:44:13,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/data/3db8f9af1/e8942a4457e44ee19eaaa0084422c258/FLAGcfe026c0f [2020-11-28 07:44:13,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/data/3db8f9af1/e8942a4457e44ee19eaaa0084422c258 [2020-11-28 07:44:13,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:13,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:13,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:13,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:13,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:13,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f2a980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13, skipping insertion in model container [2020-11-28 07:44:13,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:13,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:13,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:13,707 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:13,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:13,756 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:13,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13 WrapperNode [2020-11-28 07:44:13,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:13,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:13,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:13,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:13,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:13,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:13,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:13,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:13,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... [2020-11-28 07:44:13,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:13,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:13,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:13,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:13,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/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 07:44:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:13,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:14,217 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:14,218 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 07:44:14,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:14 BoogieIcfgContainer [2020-11-28 07:44:14,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:14,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:14,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:14,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:14,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:13" (1/3) ... [2020-11-28 07:44:14,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6028d1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:14, skipping insertion in model container [2020-11-28 07:44:14,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:13" (2/3) ... [2020-11-28 07:44:14,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6028d1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:14, skipping insertion in model container [2020-11-28 07:44:14,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:14" (3/3) ... [2020-11-28 07:44:14,229 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.22.c [2020-11-28 07:44:14,240 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:14,244 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:44:14,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:44:14,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:14,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:14,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:14,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:14,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:14,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:14,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:14,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:44:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:44:14,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:14,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:44:14,319 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:44:14,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:14,325 INFO L82 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2020-11-28 07:44:14,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:14,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462161903] [2020-11-28 07:44:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:14,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:14,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:14,442 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:44:14,443 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:44:14,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:44:14,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:14 BoogieIcfgContainer [2020-11-28 07:44:14,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:14,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:14,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:14,461 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:14,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:14" (3/4) ... [2020-11-28 07:44:14,464 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:44:14,498 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d59d2ce4-109d-45d6-8708-2040bbbfcc70/bin/utaipan/witness.graphml [2020-11-28 07:44:14,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:14,501 INFO L168 Benchmark]: Toolchain (without parser) took 953.17 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.6 MB in the beginning and 68.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,501 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 88.1 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:14,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.74 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.3 MB in the beginning and 93.6 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.72 ms. Allocated memory is still 115.3 MB. Free memory was 93.6 MB in the beginning and 92.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:14,505 INFO L168 Benchmark]: Boogie Preprocessor took 33.80 ms. Allocated memory is still 115.3 MB. Free memory was 92.3 MB in the beginning and 91.6 MB in the end (delta: 658.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:14,506 INFO L168 Benchmark]: RCFGBuilder took 385.40 ms. Allocated memory is still 115.3 MB. Free memory was 91.6 MB in the beginning and 81.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,507 INFO L168 Benchmark]: TraceAbstraction took 238.52 ms. Allocated memory is still 115.3 MB. Free memory was 81.0 MB in the beginning and 70.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,508 INFO L168 Benchmark]: Witness Printer took 37.26 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 68.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:14,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 88.1 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 209.74 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.3 MB in the beginning and 93.6 MB in the end (delta: -36.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.72 ms. Allocated memory is still 115.3 MB. Free memory was 93.6 MB in the beginning and 92.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.80 ms. Allocated memory is still 115.3 MB. Free memory was 92.3 MB in the beginning and 91.6 MB in the end (delta: 658.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 385.40 ms. Allocated memory is still 115.3 MB. Free memory was 91.6 MB in the beginning and 81.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 238.52 ms. Allocated memory is still 115.3 MB. Free memory was 81.0 MB in the beginning and 70.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 37.26 ms. Allocated memory is still 115.3 MB. Free memory was 70.5 MB in the beginning and 68.5 MB in the end (delta: 2.0 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: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, oldy; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] oldy = __VERIFIER_nondet_int() [L27] x > 0 && y <= -oldy [L27] -oldy - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 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=10occurred 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, 4 NumberOfCodeBlocks, 4 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...