./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P --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 1cbace5580915338bbd4f6efe69f1fa46dac7d6ce729fb2189890b13c893a5f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:12:08,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:12:08,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:12:08,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:12:08,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:12:08,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:12:08,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:12:08,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:12:08,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:12:08,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:12:08,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:12:08,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:12:08,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:12:08,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:12:08,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:12:08,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:12:08,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:12:08,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:12:08,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:12:08,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:12:08,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:12:08,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:12:08,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:12:08,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:12:08,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:12:08,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:12:08,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:12:08,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:12:08,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:12:08,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:12:08,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:12:08,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:12:08,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:12:08,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:12:08,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:12:08,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:12:08,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:12:08,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:12:08,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:12:08,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:12:08,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:12:08,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-21 01:12:08,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:12:08,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:12:08,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:12:08,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:12:08,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:12:08,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:12:08,740 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:12:08,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:12:08,741 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:12:08,741 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:12:08,743 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:12:08,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:12:08,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:12:08,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:12:08,744 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:12:08,745 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:12:08,745 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:12:08,745 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:12:08,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:12:08,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:12:08,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:12:08,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:12:08,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:12:08,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:12:08,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:12:08,748 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 01:12:08,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:12:08,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:12:08,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:12:08,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:12:08,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:12:08,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:12:08,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:12:08,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:12:08,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:12:08,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:12:08,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:12:08,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:12:08,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:12:08,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:12:08,755 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_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cbace5580915338bbd4f6efe69f1fa46dac7d6ce729fb2189890b13c893a5f0 [2021-11-21 01:12:09,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:12:09,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:12:09,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:12:09,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:12:09,111 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:12:09,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2021-11-21 01:12:09,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/data/530d436ed/262afb974f854350880c1de3bab0fcb4/FLAG7253ad39e [2021-11-21 01:12:09,752 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:12:09,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2021-11-21 01:12:09,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/data/530d436ed/262afb974f854350880c1de3bab0fcb4/FLAG7253ad39e [2021-11-21 01:12:10,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/data/530d436ed/262afb974f854350880c1de3bab0fcb4 [2021-11-21 01:12:10,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:12:10,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:12:10,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:12:10,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:12:10,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:12:10,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3fa772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10, skipping insertion in model container [2021-11-21 01:12:10,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:12:10,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:12:10,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:12:10,360 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:12:10,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:12:10,426 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:12:10,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10 WrapperNode [2021-11-21 01:12:10,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:12:10,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:12:10,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:12:10,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:12:10,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,484 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-11-21 01:12:10,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:12:10,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:12:10,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:12:10,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:12:10,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:12:10,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:12:10,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:12:10,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:12:10,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (1/1) ... [2021-11-21 01:12:10,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:12:10,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:12:10,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:12:10,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:12:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:12:10,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:12:10,725 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:12:10,728 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:12:10,879 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:12:10,903 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:12:10,904 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:12:10,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:12:10 BoogieIcfgContainer [2021-11-21 01:12:10,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:12:10,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:12:10,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:12:10,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:12:10,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:12:10" (1/3) ... [2021-11-21 01:12:10,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4090aea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:12:10, skipping insertion in model container [2021-11-21 01:12:10,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:10" (2/3) ... [2021-11-21 01:12:10,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4090aea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:12:10, skipping insertion in model container [2021-11-21 01:12:10,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:12:10" (3/3) ... [2021-11-21 01:12:10,916 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.03.c [2021-11-21 01:12:10,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:12:10,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:12:10,984 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:12:10,993 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 [2021-11-21 01:12:10,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:12:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 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) [2021-11-21 01:12:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:12:11,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:11,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:12:11,018 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-21 01:12:11,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1854090, now seen corresponding path program 1 times [2021-11-21 01:12:11,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:11,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115103629] [2021-11-21 01:12:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:11,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:11,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:11,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115103629] [2021-11-21 01:12:11,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115103629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:11,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:11,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:12:11,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342304313] [2021-11-21 01:12:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:11,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:12:11,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:12:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:12:11,339 INFO L87 Difference]: Start difference. First operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-11-21 01:12:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:11,393 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-21 01:12:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:12:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2021-11-21 01:12:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:11,406 INFO L225 Difference]: With dead ends: 15 [2021-11-21 01:12:11,406 INFO L226 Difference]: Without dead ends: 8 [2021-11-21 01:12:11,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:12:11,415 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:11,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:12:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-21 01:12:11,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-11-21 01:12:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-11-21 01:12:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-11-21 01:12:11,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2021-11-21 01:12:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:11,471 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-11-21 01:12:11,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-11-21 01:12:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2021-11-21 01:12:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:12:11,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:11,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:12:11,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:12:11,474 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-21 01:12:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:11,484 INFO L85 PathProgramCache]: Analyzing trace with hash 57476834, now seen corresponding path program 1 times [2021-11-21 01:12:11,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:11,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645828568] [2021-11-21 01:12:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:11,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:12:11,503 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:12:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:12:11,544 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:12:11,560 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:12:11,561 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-11-21 01:12:11,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-11-21 01:12:11,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:12:11,569 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:12:11,574 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:12:11,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:12:11 BoogieIcfgContainer [2021-11-21 01:12:11,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:12:11,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:12:11,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:12:11,621 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:12:11,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:12:10" (3/4) ... [2021-11-21 01:12:11,626 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:12:11,674 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:12:11,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:12:11,675 INFO L158 Benchmark]: Toolchain (without parser) took 1557.51ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.6MB in the beginning and 62.0MB in the end (delta: -17.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:12:11,675 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory was 60.6MB in the beginning and 60.6MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:12:11,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.62ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 75.6MB in the end (delta: -31.2MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-21 01:12:11,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.64ms. Allocated memory is still 96.5MB. Free memory was 75.4MB in the beginning and 74.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:12:11,678 INFO L158 Benchmark]: Boogie Preprocessor took 49.35ms. Allocated memory is still 96.5MB. Free memory was 74.2MB in the beginning and 73.3MB in the end (delta: 870.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:12:11,678 INFO L158 Benchmark]: RCFGBuilder took 368.73ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 64.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:12:11,679 INFO L158 Benchmark]: TraceAbstraction took 710.52ms. Allocated memory is still 96.5MB. Free memory was 64.0MB in the beginning and 63.7MB in the end (delta: 328.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:12:11,680 INFO L158 Benchmark]: Witness Printer took 54.20ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:12:11,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory was 60.6MB in the beginning and 60.6MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.62ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 75.6MB in the end (delta: -31.2MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.64ms. Allocated memory is still 96.5MB. Free memory was 75.4MB in the beginning and 74.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.35ms. Allocated memory is still 96.5MB. Free memory was 74.2MB in the beginning and 73.3MB in the end (delta: 870.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.73ms. Allocated memory is still 96.5MB. Free memory was 73.2MB in the beginning and 64.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 710.52ms. Allocated memory is still 96.5MB. Free memory was 64.0MB in the beginning and 63.7MB in the end (delta: 328.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.20ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.8MB). 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: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 1 && -2*x == oldx VAL [x=1073741825, x=0, x > 1 && -2*x == oldx=1] [L26] -2*x VAL [x=0, x=1073741825, x > 1 && -2*x == oldx=1] - UnprovableResult [Line: 26]: 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, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 2 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 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! [2021-11-21 01:12:11,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91aad64-1f2b-4702-89a6-b248a177f09e/bin/utaipan-TEXQjIfE4P/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)