./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e7623716ab1b63fd3dec96336161ed19bdb4ca6ed8b29ceca2bb1161bdbc0766 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:33:50,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:33:50,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:33:50,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:33:50,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:33:50,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:33:50,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:33:50,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:33:50,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:33:50,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:33:50,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:33:50,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:33:50,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:33:50,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:33:50,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:33:50,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:33:50,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:33:50,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:33:50,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:33:50,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:33:50,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:33:50,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:33:50,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:33:50,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:33:50,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:33:50,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:33:50,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:33:50,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:33:50,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:33:50,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:33:50,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:33:50,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:33:50,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:33:50,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:33:50,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:33:50,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:33:50,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:33:50,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:33:50,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:33:50,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:33:50,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:33:50,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-02 20:33:50,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:33:50,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:33:50,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:33:50,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:33:50,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:33:50,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:33:50,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:33:50,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:33:50,603 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:33:50,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:33:50,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:33:50,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:33:50,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:33:50,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:33:50,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:33:50,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:33:50,606 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:33:50,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:33:50,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:33:50,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:33:50,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:33:50,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:33:50,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:33:50,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:50,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:33:50,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:33:50,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:33:50,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:33:50,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:33:50,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:33:50,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7623716ab1b63fd3dec96336161ed19bdb4ca6ed8b29ceca2bb1161bdbc0766 [2022-11-02 20:33:50,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:33:50,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:33:50,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:33:50,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:33:50,894 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:33:50,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c [2022-11-02 20:33:50,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/data/d8cb01019/90b299d11c064c9d8f92857ea1818829/FLAG61736db84 [2022-11-02 20:33:51,467 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:33:51,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex8.c [2022-11-02 20:33:51,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/data/d8cb01019/90b299d11c064c9d8f92857ea1818829/FLAG61736db84 [2022-11-02 20:33:51,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/data/d8cb01019/90b299d11c064c9d8f92857ea1818829 [2022-11-02 20:33:51,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:33:51,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:33:51,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:51,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:33:51,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:33:51,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:51" (1/1) ... [2022-11-02 20:33:51,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d824540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:51, skipping insertion in model container [2022-11-02 20:33:51,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:51" (1/1) ... [2022-11-02 20:33:51,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:33:51,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:33:52,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:52,174 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:33:52,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:52,211 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:33:52,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52 WrapperNode [2022-11-02 20:33:52,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:52,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:52,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:33:52,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:33:52,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,249 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-02 20:33:52,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:52,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:33:52,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:33:52,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:33:52,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:33:52,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:33:52,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:33:52,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:33:52,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (1/1) ... [2022-11-02 20:33:52,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:52,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:33:52,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:33:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:33:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:52,456 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:52,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:52,538 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:52,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:52,546 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:33:52,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:52 BoogieIcfgContainer [2022-11-02 20:33:52,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:52,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:52,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:52,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:52,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:33:51" (1/3) ... [2022-11-02 20:33:52,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f76946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:52, skipping insertion in model container [2022-11-02 20:33:52,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:52" (2/3) ... [2022-11-02 20:33:52,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f76946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:52, skipping insertion in model container [2022-11-02 20:33:52,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:52" (3/3) ... [2022-11-02 20:33:52,557 INFO L112 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex8.c [2022-11-02 20:33:52,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:52,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:33:52,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:52,632 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@274fc18a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:52,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:33:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 15 states have internal predecessors, (18), 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) [2022-11-02 20:33:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:33:52,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:52,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:33:52,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:33:52,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash 28699817, now seen corresponding path program 1 times [2022-11-02 20:33:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:52,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078601321] [2022-11-02 20:33:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:52,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:52,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:33:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078601321] [2022-11-02 20:33:52,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078601321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:52,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:52,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:33:52,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885999846] [2022-11-02 20:33:52,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:52,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:33:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:33:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:33:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:33:52,917 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 15 states have internal predecessors, (18), 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) [2022-11-02 20:33:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:52,972 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-02 20:33:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:33:52,975 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 [2022-11-02 20:33:52,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:52,983 INFO L225 Difference]: With dead ends: 20 [2022-11-02 20:33:52,984 INFO L226 Difference]: Without dead ends: 11 [2022-11-02 20:33:52,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:33:52,995 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:52,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-02 20:33:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-02 20:33:53,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-11-02 20:33:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-02 20:33:53,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-11-02 20:33:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:53,049 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-02 20:33:53,049 INFO L496 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) [2022-11-02 20:33:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-02 20:33:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:33:53,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:53,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:33:53,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:33:53,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:33:53,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash 889694377, now seen corresponding path program 1 times [2022-11-02 20:33:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:53,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225273490] [2022-11-02 20:33:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:33:53,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:33:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:33:53,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:33:53,109 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:33:53,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-02 20:33:53,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-02 20:33:53,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-02 20:33:53,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-02 20:33:53,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:33:53,120 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:33:53,128 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:33:53,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:33:53 BoogieIcfgContainer [2022-11-02 20:33:53,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:33:53,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:33:53,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:33:53,158 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:33:53,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:52" (3/4) ... [2022-11-02 20:33:53,161 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 20:33:53,188 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:33:53,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:33:53,189 INFO L158 Benchmark]: Toolchain (without parser) took 1223.02ms. Allocated memory is still 125.8MB. Free memory was 93.8MB in the beginning and 66.0MB in the end (delta: 27.8MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2022-11-02 20:33:53,190 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 47.4MB in the beginning and 47.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:33:53,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.02ms. Allocated memory is still 125.8MB. Free memory was 93.8MB in the beginning and 102.6MB in the end (delta: -8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:33:53,191 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.38ms. Allocated memory is still 125.8MB. Free memory was 102.6MB in the beginning and 101.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:33:53,192 INFO L158 Benchmark]: Boogie Preprocessor took 31.94ms. Allocated memory is still 125.8MB. Free memory was 101.1MB in the beginning and 99.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:33:53,192 INFO L158 Benchmark]: RCFGBuilder took 264.31ms. Allocated memory is still 125.8MB. Free memory was 99.9MB in the beginning and 91.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:33:53,193 INFO L158 Benchmark]: TraceAbstraction took 606.60ms. Allocated memory is still 125.8MB. Free memory was 90.7MB in the beginning and 67.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-02 20:33:53,193 INFO L158 Benchmark]: Witness Printer took 31.13ms. Allocated memory is still 125.8MB. Free memory was 67.6MB in the beginning and 66.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:33:53,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 47.4MB in the beginning and 47.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.02ms. Allocated memory is still 125.8MB. Free memory was 93.8MB in the beginning and 102.6MB in the end (delta: -8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.38ms. Allocated memory is still 125.8MB. Free memory was 102.6MB in the beginning and 101.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.94ms. Allocated memory is still 125.8MB. Free memory was 101.1MB in the beginning and 99.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 264.31ms. Allocated memory is still 125.8MB. Free memory was 99.9MB in the beginning and 91.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 606.60ms. Allocated memory is still 125.8MB. Free memory was 90.7MB in the beginning and 67.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 31.13ms. Allocated memory is still 125.8MB. Free memory was 67.6MB in the beginning and 66.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int q, y; [L15] q = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE q > 0 VAL [q=1, y=-2147483648] [L18] COND FALSE !(y > 0) VAL [q=1, y=-2147483648] [L22] y - 1 VAL [q=1, y=-2147483648] - UnprovableResult [Line: 22]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 23]: 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 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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! [2022-11-02 20:33:53,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69001b1c-a10e-4d22-ac93-d3a431c8f7de/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)