./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw --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 32bit --witnessprinter.graph.data.programhash 039c983cd55187ea3968542120c3863142c878775a3be18d8ccc83df12199e4d .............................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-e943c26 [2021-10-20 04:39:14,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 04:39:14,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 04:39:14,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 04:39:14,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 04:39:14,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 04:39:14,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 04:39:14,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 04:39:14,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 04:39:14,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 04:39:14,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 04:39:14,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 04:39:14,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 04:39:14,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 04:39:14,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 04:39:14,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 04:39:14,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 04:39:14,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 04:39:14,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 04:39:14,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 04:39:14,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 04:39:14,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 04:39:14,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 04:39:14,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 04:39:14,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 04:39:14,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 04:39:14,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 04:39:14,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 04:39:14,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 04:39:14,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 04:39:14,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 04:39:14,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 04:39:14,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 04:39:14,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 04:39:14,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 04:39:14,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 04:39:14,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 04:39:14,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 04:39:14,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 04:39:14,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 04:39:14,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 04:39:14,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-20 04:39:14,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 04:39:14,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 04:39:14,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 04:39:14,181 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 04:39:14,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 04:39:14,182 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 04:39:14,182 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 04:39:14,183 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 04:39:14,183 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 04:39:14,183 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 04:39:14,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 04:39:14,184 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 04:39:14,185 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 04:39:14,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 04:39:14,185 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 04:39:14,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 04:39:14,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 04:39:14,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 04:39:14,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 04:39:14,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 04:39:14,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 04:39:14,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 04:39:14,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 04:39:14,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 04:39:14,188 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-20 04:39:14,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 04:39:14,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 04:39:14,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 04:39:14,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 04:39:14,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 04:39:14,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 04:39:14,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 04:39:14,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 04:39:14,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 04:39:14,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 04:39:14,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 04:39:14,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 04:39:14,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 04:39:14,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 04:39:14,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 04:39:14,194 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_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039c983cd55187ea3968542120c3863142c878775a3be18d8ccc83df12199e4d [2021-10-20 04:39:14,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 04:39:14,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 04:39:14,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 04:39:14,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 04:39:14,551 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 04:39:14,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2021-10-20 04:39:14,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/data/5d15e944d/37caed686e2343238f14d3d4bd38f71f/FLAG046b8d661 [2021-10-20 04:39:15,091 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 04:39:15,092 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2021-10-20 04:39:15,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/data/5d15e944d/37caed686e2343238f14d3d4bd38f71f/FLAG046b8d661 [2021-10-20 04:39:15,502 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/data/5d15e944d/37caed686e2343238f14d3d4bd38f71f [2021-10-20 04:39:15,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 04:39:15,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 04:39:15,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 04:39:15,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 04:39:15,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 04:39:15,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0272f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15, skipping insertion in model container [2021-10-20 04:39:15,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 04:39:15,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 04:39:15,732 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/sv-benchmarks/c/loop-zilu/benchmark47_linear.i[868,881] [2021-10-20 04:39:15,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 04:39:15,747 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 04:39:15,758 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/sv-benchmarks/c/loop-zilu/benchmark47_linear.i[868,881] [2021-10-20 04:39:15,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 04:39:15,775 INFO L208 MainTranslator]: Completed translation [2021-10-20 04:39:15,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15 WrapperNode [2021-10-20 04:39:15,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 04:39:15,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 04:39:15,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 04:39:15,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 04:39:15,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 04:39:15,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 04:39:15,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 04:39:15,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 04:39:15,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 04:39:15,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 04:39:15,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 04:39:15,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 04:39:15,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (1/1) ... [2021-10-20 04:39:15,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 04:39:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 04:39:15,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 04:39:15,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 04:39:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 04:39:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 04:39:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 04:39:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 04:39:16,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 04:39:16,209 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 04:39:16,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 04:39:16 BoogieIcfgContainer [2021-10-20 04:39:16,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 04:39:16,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 04:39:16,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 04:39:16,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 04:39:16,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 04:39:15" (1/3) ... [2021-10-20 04:39:16,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4738ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 04:39:16, skipping insertion in model container [2021-10-20 04:39:16,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 04:39:15" (2/3) ... [2021-10-20 04:39:16,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4738ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 04:39:16, skipping insertion in model container [2021-10-20 04:39:16,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 04:39:16" (3/3) ... [2021-10-20 04:39:16,238 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark47_linear.i [2021-10-20 04:39:16,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 04:39:16,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-20 04:39:16,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 04:39:16,326 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 04:39:16,328 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-20 04:39:16,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 04:39:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 04:39:16,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 04:39:16,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 04:39:16,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-20 04:39:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 04:39:16,367 INFO L82 PathProgramCache]: Analyzing trace with hash 93500143, now seen corresponding path program 1 times [2021-10-20 04:39:16,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 04:39:16,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242656512] [2021-10-20 04:39:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 04:39:16,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 04:39:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 04:39:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 04:39:16,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 04:39:16,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242656512] [2021-10-20 04:39:16,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242656512] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 04:39:16,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 04:39:16,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 04:39:16,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828851152] [2021-10-20 04:39:16,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 04:39:16,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 04:39:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 04:39:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 04:39:16,554 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 04:39:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 04:39:16,594 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-10-20 04:39:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 04:39:16,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 04:39:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 04:39:16,604 INFO L225 Difference]: With dead ends: 29 [2021-10-20 04:39:16,604 INFO L226 Difference]: Without dead ends: 25 [2021-10-20 04:39:16,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 04:39:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-20 04:39:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-20 04:39:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.6875) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 04:39:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-20 04:39:16,645 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2021-10-20 04:39:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 04:39:16,646 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-20 04:39:16,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 04:39:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-20 04:39:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 04:39:16,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 04:39:16,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 04:39:16,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 04:39:16,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-20 04:39:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 04:39:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash 93500335, now seen corresponding path program 1 times [2021-10-20 04:39:16,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 04:39:16,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137234874] [2021-10-20 04:39:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 04:39:16,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 04:39:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 04:39:16,681 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 04:39:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 04:39:16,724 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 04:39:16,724 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 04:39:16,726 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,734 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 04:39:16,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 04:39:16,741 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 04:39:16,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 04:39:16 BoogieIcfgContainer [2021-10-20 04:39:16,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 04:39:16,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 04:39:16,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 04:39:16,768 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 04:39:16,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 04:39:16" (3/4) ... [2021-10-20 04:39:16,770 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 04:39:16,818 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb04a6e7-6523-40b5-b151-7f20128d227c/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 04:39:16,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 04:39:16,823 INFO L168 Benchmark]: Toolchain (without parser) took 1313.46 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 59.5 MB in the beginning and 95.7 MB in the end (delta: -36.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 04:39:16,826 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 94.4 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 04:39:16,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 70.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 04:39:16,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.00 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 04:39:16,828 INFO L168 Benchmark]: Boogie Preprocessor took 20.41 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 67.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 04:39:16,829 INFO L168 Benchmark]: RCFGBuilder took 358.82 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 56.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 04:39:16,830 INFO L168 Benchmark]: TraceAbstraction took 552.49 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 55.7 MB in the beginning and 97.2 MB in the end (delta: -41.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 04:39:16,830 INFO L168 Benchmark]: Witness Printer took 51.37 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 95.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 04:39:16,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 94.4 MB. Free memory was 64.1 MB in the beginning and 64.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.91 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 70.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.00 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.41 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 67.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 358.82 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 56.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 552.49 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 55.7 MB in the beginning and 97.2 MB in the end (delta: -41.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 51.37 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 95.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x