./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c --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_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE --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 a1ab69f0937890c2718fbb3a364dff1229f612b683709e7f1057d021d65f81aa ......................................................................................................................................................................................................................................................................................................... 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 [2021-10-24 10:17:29,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:17:29,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:17:30,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:17:30,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:17:30,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:17:30,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:17:30,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:17:30,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:17:30,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:17:30,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:17:30,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:17:30,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:17:30,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:17:30,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:17:30,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:17:30,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:17:30,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:17:30,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:17:30,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:17:30,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:17:30,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:17:30,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:17:30,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:17:30,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:17:30,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:17:30,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:17:30,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:17:30,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:17:30,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:17:30,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:17:30,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:17:30,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:17:30,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:17:30,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:17:30,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:17:30,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:17:30,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:17:30,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:17:30,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:17:30,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:17:30,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-24 10:17:30,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:17:30,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:17:30,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:17:30,132 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:17:30,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:17:30,133 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:17:30,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:17:30,133 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:17:30,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:17:30,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:17:30,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:17:30,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:17:30,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:17:30,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:17:30,142 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:17:30,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:17:30,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:17:30,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:17:30,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:17:30,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:17:30,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:17:30,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:17:30,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:17:30,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:17:30,145 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 10:17:30,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:17:30,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:17:30,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:17:30,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:17:30,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:17:30,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:17:30,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:30,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:17:30,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:17:30,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:17:30,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:17:30,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:17:30,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:17:30,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:17:30,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:17:30,150 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_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1ab69f0937890c2718fbb3a364dff1229f612b683709e7f1057d021d65f81aa [2021-10-24 10:17:30,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:17:30,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:17:30,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:17:30,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:17:30,451 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:17:30,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2021-10-24 10:17:30,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/data/9e6a11eab/dd79f98013934a82ac58de7a6f5ac2ca/FLAG81d8b8a1f [2021-10-24 10:17:30,942 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:17:30,943 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c [2021-10-24 10:17:30,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/data/9e6a11eab/dd79f98013934a82ac58de7a6f5ac2ca/FLAG81d8b8a1f [2021-10-24 10:17:31,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/data/9e6a11eab/dd79f98013934a82ac58de7a6f5ac2ca [2021-10-24 10:17:31,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:17:31,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:17:31,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:31,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:17:31,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:17:31,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d496d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31, skipping insertion in model container [2021-10-24 10:17:31,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:17:31,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:17:31,551 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_e7259efc-e040-4749-a8cc-482177051fa4/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c[514,527] [2021-10-24 10:17:31,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:31,561 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:17:31,572 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_e7259efc-e040-4749-a8cc-482177051fa4/sv-benchmarks/c/recursive-simple/id_b3_o5-1.c[514,527] [2021-10-24 10:17:31,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:31,583 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:17:31,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31 WrapperNode [2021-10-24 10:17:31,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:31,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:31,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:17:31,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:17:31,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:31,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:17:31,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:17:31,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:17:31,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:17:31,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:17:31,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:17:31,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:17:31,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (1/1) ... [2021-10-24 10:17:31,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:31,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:31,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:17:31,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:17:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:17:31,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:17:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:17:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-10-24 10:17:31,763 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-10-24 10:17:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:17:32,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:17:32,108 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 10:17:32,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:32 BoogieIcfgContainer [2021-10-24 10:17:32,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:17:32,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:17:32,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:17:32,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:17:32,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:17:31" (1/3) ... [2021-10-24 10:17:32,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd661c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:32, skipping insertion in model container [2021-10-24 10:17:32,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:31" (2/3) ... [2021-10-24 10:17:32,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bd661c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:32, skipping insertion in model container [2021-10-24 10:17:32,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:32" (3/3) ... [2021-10-24 10:17:32,120 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o5-1.c [2021-10-24 10:17:32,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:17:32,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 10:17:32,173 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:17:32,180 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 [2021-10-24 10:17:32,180 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:17:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-24 10:17:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:17:32,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:32,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:17:32,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-24 10:17:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:32,246 INFO L82 PathProgramCache]: Analyzing trace with hash 66627700, now seen corresponding path program 1 times [2021-10-24 10:17:32,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:32,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814047317] [2021-10-24 10:17:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:32,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:32,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:32,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814047317] [2021-10-24 10:17:32,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814047317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:32,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:32,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:17:32,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457157214] [2021-10-24 10:17:32,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:17:32,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:17:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:17:32,461 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:32,531 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-24 10:17:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:17:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-24 10:17:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:32,539 INFO L225 Difference]: With dead ends: 18 [2021-10-24 10:17:32,539 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 10:17:32,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:17:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 10:17:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-24 10:17:32,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-24 10:17:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-24 10:17:32,593 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-10-24 10:17:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:32,593 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-24 10:17:32,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:17:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-24 10:17:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:17:32,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:32,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:17:32,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:17:32,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-24 10:17:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:32,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2065458753, now seen corresponding path program 1 times [2021-10-24 10:17:32,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:32,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247035325] [2021-10-24 10:17:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:32,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:32,618 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:17:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:32,662 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:17:32,662 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:17:32,664 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:32,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:32,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:32,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:32,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:17:32,673 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:17:32,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:17:32 BoogieIcfgContainer [2021-10-24 10:17:32,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:17:32,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:17:32,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:17:32,695 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:17:32,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:32" (3/4) ... [2021-10-24 10:17:32,697 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:17:32,726 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:17:32,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:17:32,728 INFO L168 Benchmark]: Toolchain (without parser) took 1376.57 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.1 MB in the beginning and 80.5 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:32,729 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 62.2 MB in the beginning and 62.2 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:32,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.06 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 67.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:32,731 INFO L168 Benchmark]: Boogie Preprocessor took 48.24 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 65.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:32,732 INFO L168 Benchmark]: RCFGBuilder took 433.24 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 54.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,733 INFO L168 Benchmark]: TraceAbstraction took 580.83 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.8 MB in the beginning and 82.1 MB in the end (delta: -28.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:32,733 INFO L168 Benchmark]: Witness Printer took 32.06 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 80.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 62.2 MB in the beginning and 62.2 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.06 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 67.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.24 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 65.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 433.24 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 54.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 580.83 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.8 MB in the beginning and 82.1 MB in the end (delta: -28.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 32.06 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 80.5 MB in the end (delta: 1.6 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: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL id(input) VAL [\old(x)=-2147483648] [L7] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L8] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 499.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 33.6ms, AutomataDifference: 93.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 23 SDslu, 12 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.4ms SsaConstructionTime, 44.7ms SatisfiabilityAnalysisTime, 87.1ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2021-10-24 10:17:32,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7259efc-e040-4749-a8cc-482177051fa4/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...