./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh --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 103198e46ec6f3d29d6f3ad1dd77f22c63a30ce9281488605b03721103d00e9d --- 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-2329fc7 [2022-12-14 06:51:02,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:51:02,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:51:02,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:51:02,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:51:02,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:51:02,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:51:02,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:51:02,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:51:02,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:51:02,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:51:02,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:51:02,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:51:02,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:51:02,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:51:02,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:51:02,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:51:02,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:51:02,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:51:02,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:51:02,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:51:02,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:51:02,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:51:02,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:51:02,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:51:02,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:51:02,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:51:02,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:51:02,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:51:02,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:51:02,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:51:02,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:51:02,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:51:02,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:51:02,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:51:02,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:51:02,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:51:02,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:51:02,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:51:02,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:51:02,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:51:02,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 06:51:02,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:51:02,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:51:02,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:51:02,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:51:02,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:51:02,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:51:02,677 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:51:02,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:51:02,678 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:51:02,678 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:51:02,678 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:51:02,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:51:02,679 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:51:02,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:51:02,679 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:51:02,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:51:02,679 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:51:02,679 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:51:02,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:51:02,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:51:02,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:51:02,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:51:02,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:51:02,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:51:02,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:51:02,681 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:51:02,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:51:02,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:51:02,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:51:02,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:51:02,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:51:02,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:51:02,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:51:02,683 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:51:02,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:51:02,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:51:02,683 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:51:02,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:51:02,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:51:02,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:51:02,684 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_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103198e46ec6f3d29d6f3ad1dd77f22c63a30ce9281488605b03721103d00e9d [2022-12-14 06:51:02,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:51:02,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:51:02,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:51:02,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:51:02,871 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:51:02,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.c [2022-12-14 06:51:05,398 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:51:05,512 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:51:05,512 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.22.c [2022-12-14 06:51:05,516 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/data/f83247582/7625467118fe4003b38f0bca3ff2a4ad/FLAG428747ff1 [2022-12-14 06:51:05,528 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/data/f83247582/7625467118fe4003b38f0bca3ff2a4ad [2022-12-14 06:51:05,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:51:05,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:51:05,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:51:05,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:51:05,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:51:05,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bb0036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05, skipping insertion in model container [2022-12-14 06:51:05,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:51:05,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:51:05,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:51:05,673 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:51:05,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:51:05,693 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:51:05,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05 WrapperNode [2022-12-14 06:51:05,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:51:05,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:51:05,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:51:05,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:51:05,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,715 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-12-14 06:51:05,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:51:05,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:51:05,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:51:05,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:51:05,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,728 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:51:05,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:51:05,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:51:05,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:51:05,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (1/1) ... [2022-12-14 06:51:05,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:51:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:51:05,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:51:05,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:51:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:51:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:51:05,849 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:51:05,851 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:51:05,912 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:51:05,927 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:51:05,927 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:51:05,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:51:05 BoogieIcfgContainer [2022-12-14 06:51:05,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:51:05,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:51:05,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:51:05,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:51:05,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:51:05" (1/3) ... [2022-12-14 06:51:05,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9d6096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:51:05, skipping insertion in model container [2022-12-14 06:51:05,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:05" (2/3) ... [2022-12-14 06:51:05,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9d6096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:51:05, skipping insertion in model container [2022-12-14 06:51:05,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:51:05" (3/3) ... [2022-12-14 06:51:05,938 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.22.c [2022-12-14 06:51:05,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:51:05,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:51:05,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:51:06,004 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;@12135110, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:51:06,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 06:51:06,008 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) [2022-12-14 06:51:06,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 06:51:06,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:06,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 06:51:06,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 06:51:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:06,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1854090, now seen corresponding path program 1 times [2022-12-14 06:51:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:06,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55690438] [2022-12-14 06:51:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:06,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:06,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:06,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55690438] [2022-12-14 06:51:06,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55690438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:06,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:06,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:51:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95375834] [2022-12-14 06:51:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:06,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:51:06,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:06,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:51:06,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:06,185 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 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-12-14 06:51:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:06,219 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-12-14 06:51:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:51:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2022-12-14 06:51:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:06,227 INFO L225 Difference]: With dead ends: 20 [2022-12-14 06:51:06,227 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 06:51:06,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:06,232 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:06,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:51:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 06:51:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2022-12-14 06:51:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-12-14 06:51:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-12-14 06:51:06,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2022-12-14 06:51:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:06,262 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-12-14 06:51:06,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-12-14 06:51:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-12-14 06:51:06,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 06:51:06,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:06,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 06:51:06,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:51:06,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 06:51:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash 57476834, now seen corresponding path program 1 times [2022-12-14 06:51:06,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:06,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020530630] [2022-12-14 06:51:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:06,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:51:06,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:51:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:51:06,291 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 06:51:06,291 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:51:06,293 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 06:51:06,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 06:51:06,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:51:06,299 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 06:51:06,304 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:51:06,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:51:06 BoogieIcfgContainer [2022-12-14 06:51:06,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:51:06,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:51:06,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:51:06,322 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:51:06,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:51:05" (3/4) ... [2022-12-14 06:51:06,324 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 06:51:06,354 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:51:06,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:51:06,355 INFO L158 Benchmark]: Toolchain (without parser) took 823.33ms. Allocated memory is still 169.9MB. Free memory was 136.6MB in the beginning and 89.3MB in the end (delta: 47.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-12-14 06:51:06,356 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 111.1MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:51:06,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.36ms. Allocated memory is still 169.9MB. Free memory was 135.9MB in the beginning and 127.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 06:51:06,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.81ms. Allocated memory is still 169.9MB. Free memory was 127.0MB in the beginning and 125.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:51:06,357 INFO L158 Benchmark]: Boogie Preprocessor took 14.47ms. Allocated memory is still 169.9MB. Free memory was 125.6MB in the beginning and 124.9MB in the end (delta: 670.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:51:06,357 INFO L158 Benchmark]: RCFGBuilder took 199.29ms. Allocated memory is still 169.9MB. Free memory was 124.8MB in the beginning and 115.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 06:51:06,358 INFO L158 Benchmark]: TraceAbstraction took 388.98ms. Allocated memory is still 169.9MB. Free memory was 114.5MB in the beginning and 91.3MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-14 06:51:06,358 INFO L158 Benchmark]: Witness Printer took 32.87ms. Allocated memory is still 169.9MB. Free memory was 90.6MB in the beginning and 89.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:51:06,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 111.1MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.36ms. Allocated memory is still 169.9MB. Free memory was 135.9MB in the beginning and 127.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.81ms. Allocated memory is still 169.9MB. Free memory was 127.0MB in the beginning and 125.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.47ms. Allocated memory is still 169.9MB. Free memory was 125.6MB in the beginning and 124.9MB in the end (delta: 670.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 199.29ms. Allocated memory is still 169.9MB. Free memory was 124.8MB in the beginning and 115.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 388.98ms. Allocated memory is still 169.9MB. Free memory was 114.5MB in the beginning and 91.3MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 32.87ms. Allocated memory is still 169.9MB. Free memory was 90.6MB in the beginning and 89.3MB in the end (delta: 1.3MB). There was no memory consumed. 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: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, oldy; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] oldy = __VERIFIER_nondet_int() [L27] x > 0 && y <= -oldy VAL [x=1, x > 0 && y <= -oldy=1, y=0, y=-2147483648] [L27] -oldy VAL [x=1, x > 0 && y <= -oldy=1, y=0, y=-2147483648] - UnprovableResult [Line: 27]: 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: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=1, 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, 2 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, 9 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! [2022-12-14 06:51:06,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fce1be0a-c5e9-4089-b2d3-7ab47f0a463d/bin/utaipan-gh47qXpMRh/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)