./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-ICALP2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/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_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-ICALP2005-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/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 64bit --witnessprinter.graph.data.programhash 3a2e336c14e0f0809697e411e26667c450d0bd54379bc5b17c5ba39ad5fe8d68 ....................................................................................................................................................................................................................................................................................................................... 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 10:17:22,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:17:22,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:17:22,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:17:22,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:17:22,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:17:22,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:17:22,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:17:22,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:17:22,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:17:22,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:17:22,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:17:22,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:17:22,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:17:22,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:17:22,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:17:22,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:17:22,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:17:22,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:17:22,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:17:22,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:17:22,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:17:22,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:17:22,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:17:22,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:17:22,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:17:22,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:17:22,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:17:22,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:17:22,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:17:22,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:17:22,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:17:22,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:17:22,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:17:22,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:17:22,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:17:22,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:17:22,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:17:22,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:17:22,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:17:22,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:17:22,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-24 10:17:22,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:17:22,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:17:22,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:17:22,602 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:17:22,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:17:22,603 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:17:22,603 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:17:22,604 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:17:22,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:17:22,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:17:22,613 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:17:22,613 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:17:22,614 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:17:22,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:17:22,614 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:17:22,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:17:22,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:17:22,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:17:22,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:17:22,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:17:22,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:17:22,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:17:22,617 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 10:17:22,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:17:22,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:17:22,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:17:22,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:17:22,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:17:22,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:22,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:17:22,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:17:22,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:17:22,622 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:17:22,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:17:22,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:17:22,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:17:22,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:17:22,623 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_6c13f749-20fc-4434-888e-0d88da86a691/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a2e336c14e0f0809697e411e26667c450d0bd54379bc5b17c5ba39ad5fe8d68 [2021-10-24 10:17:23,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:17:23,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:17:23,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:17:23,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:17:23,050 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:17:23,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-ICALP2005-Fig1.c [2021-10-24 10:17:23,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/data/5fe978714/00c7de77c8c94b2381d9df2ecbfdb9c2/FLAG99d5341a1 [2021-10-24 10:17:23,638 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:17:23,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-ICALP2005-Fig1.c [2021-10-24 10:17:23,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/data/5fe978714/00c7de77c8c94b2381d9df2ecbfdb9c2/FLAG99d5341a1 [2021-10-24 10:17:23,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/data/5fe978714/00c7de77c8c94b2381d9df2ecbfdb9c2 [2021-10-24 10:17:23,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:17:23,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:17:23,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:23,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:17:23,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:17:23,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:23" (1/1) ... [2021-10-24 10:17:24,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4a29c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:23, skipping insertion in model container [2021-10-24 10:17:24,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:23" (1/1) ... [2021-10-24 10:17:24,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:17:24,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:17:24,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:24,207 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:17:24,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:24,249 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:17:24,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24 WrapperNode [2021-10-24 10:17:24,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:24,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:24,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:17:24,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:17:24,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:24,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:17:24,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:17:24,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:17:24,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:17:24,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:17:24,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:17:24,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:17:24,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (1/1) ... [2021-10-24 10:17:24,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:24,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:24,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:17:24,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:17:24,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:17:24,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:17:24,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:17:24,724 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-24 10:17:24,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:24 BoogieIcfgContainer [2021-10-24 10:17:24,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:17:24,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:17:24,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:17:24,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:17:24,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:17:23" (1/3) ... [2021-10-24 10:17:24,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd4e145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:24, skipping insertion in model container [2021-10-24 10:17:24,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:24" (2/3) ... [2021-10-24 10:17:24,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd4e145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:24, skipping insertion in model container [2021-10-24 10:17:24,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:24" (3/3) ... [2021-10-24 10:17:24,736 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-ICALP2005-Fig1.c [2021-10-24 10:17:24,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:17:24,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-24 10:17:24,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:17:24,840 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 10:17:24,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-24 10:17:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.875) internal successors, (30), 26 states have internal predecessors, (30), 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) [2021-10-24 10:17:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:17:24,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:24,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:17:24,870 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)] === [2021-10-24 10:17:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:24,882 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2021-10-24 10:17:24,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:24,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872387197] [2021-10-24 10:17:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:24,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:25,097 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 10:17:25,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:25,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872387197] [2021-10-24 10:17:25,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872387197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:25,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:25,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:17:25,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670204280] [2021-10-24 10:17:25,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:25,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:25,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:25,137 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.875) internal successors, (30), 26 states have internal predecessors, (30), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-10-24 10:17:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:25,289 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-10-24 10:17:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:25,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-10-24 10:17:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:25,303 INFO L225 Difference]: With dead ends: 43 [2021-10-24 10:17:25,303 INFO L226 Difference]: Without dead ends: 38 [2021-10-24 10:17:25,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-24 10:17:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2021-10-24 10:17:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-10-24 10:17:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-24 10:17:25,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 3 [2021-10-24 10:17:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:25,353 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-24 10:17:25,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-10-24 10:17:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-24 10:17:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:17:25,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:25,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:17:25,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:17:25,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-24 10:17:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:25,361 INFO L82 PathProgramCache]: Analyzing trace with hash 957349, now seen corresponding path program 1 times [2021-10-24 10:17:25,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:25,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106977258] [2021-10-24 10:17:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:25,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:25,397 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:17:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:25,442 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:17:25,443 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:17:25,445 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:17:25,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:17:25,461 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:17:25,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:17:25 BoogieIcfgContainer [2021-10-24 10:17:25,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:17:25,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:17:25,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:17:25,479 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:17:25,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:24" (3/4) ... [2021-10-24 10:17:25,483 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:17:25,539 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:17:25,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:17:25,543 INFO L168 Benchmark]: Toolchain (without parser) took 1548.99 ms. Allocated memory is still 121.6 MB. Free memory was 89.4 MB in the beginning and 62.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:25,547 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 45.4 MB in the beginning and 45.4 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:25,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.54 ms. Allocated memory is still 121.6 MB. Free memory was 89.1 MB in the beginning and 98.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:25,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.80 ms. Allocated memory is still 121.6 MB. Free memory was 98.8 MB in the beginning and 97.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:25,554 INFO L168 Benchmark]: Boogie Preprocessor took 42.10 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 96.3 MB in the end (delta: 926.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:25,555 INFO L168 Benchmark]: RCFGBuilder took 389.47 ms. Allocated memory is still 121.6 MB. Free memory was 96.3 MB in the beginning and 86.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:25,555 INFO L168 Benchmark]: TraceAbstraction took 748.64 ms. Allocated memory is still 121.6 MB. Free memory was 86.3 MB in the beginning and 63.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:25,556 INFO L168 Benchmark]: Witness Printer took 62.02 ms. Allocated memory is still 121.6 MB. Free memory was 63.7 MB in the beginning and 62.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:25,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 45.4 MB in the beginning and 45.4 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.54 ms. Allocated memory is still 121.6 MB. Free memory was 89.1 MB in the beginning and 98.8 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.80 ms. Allocated memory is still 121.6 MB. Free memory was 98.8 MB in the beginning and 97.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.10 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 96.3 MB in the end (delta: 926.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.47 ms. Allocated memory is still 121.6 MB. Free memory was 96.3 MB in the beginning and 86.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 748.64 ms. Allocated memory is still 121.6 MB. Free memory was 86.3 MB in the beginning and 63.7 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 62.02 ms. Allocated memory is still 121.6 MB. Free memory was 63.7 MB in the beginning and 62.0 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: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y, N; [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] N = __VERIFIER_nondet_int() [L21] COND TRUE N < 536870912 && x < 536870912 && y < 536870912 && x >= -1073741824 [L22] x + y - 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: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: 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, 27 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 628.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.6ms, AutomataDifference: 194.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 20 SDslu, 3 SDs, 0 SdLazy, 39 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.5ms SsaConstructionTime, 49.2ms SatisfiabilityAnalysisTime, 81.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 10:17:25,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c13f749-20fc-4434-888e-0d88da86a691/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...