./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS --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 585a87eac0db224d6850b5fe200672451f9df145ad1a34b890f17beb951ec393 --- 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-8393723 [2022-11-19 08:10:55,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:10:55,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:10:55,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:10:55,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:10:55,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:10:55,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:10:55,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:10:55,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:10:55,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:10:55,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:10:55,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:10:55,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:10:55,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:10:55,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:10:55,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:10:55,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:10:55,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:10:55,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:10:55,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:10:55,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:10:55,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:10:55,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:10:55,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:10:55,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:10:55,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:10:55,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:10:55,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:10:55,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:10:55,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:10:55,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:10:55,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:10:55,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:10:55,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:10:55,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:10:55,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:10:55,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:10:55,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:10:55,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:10:55,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:10:55,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:10:55,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 08:10:55,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:10:55,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:10:55,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:10:55,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:10:55,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:10:55,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:10:55,852 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:10:55,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:10:55,853 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:10:55,853 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:10:55,854 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:10:55,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:10:55,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:10:55,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:10:55,856 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:10:55,856 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:10:55,856 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:10:55,856 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:10:55,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:10:55,858 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:10:55,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:10:55,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:10:55,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:10:55,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:10:55,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:10:55,861 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 08:10:55,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:10:55,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:10:55,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:10:55,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:10:55,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:10:55,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:10:55,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:10:55,863 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:10:55,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:10:55,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:10:55,864 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:10:55,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:10:55,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:10:55,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:10:55,866 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_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 585a87eac0db224d6850b5fe200672451f9df145ad1a34b890f17beb951ec393 [2022-11-19 08:10:56,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:10:56,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:10:56,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:10:56,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:10:56,249 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:10:56,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-crafted/Bangalore-1.c [2022-11-19 08:10:56,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/data/667674e5c/ebfc59099c6a48a5b60cb484e5924f59/FLAGd4bec1c90 [2022-11-19 08:10:56,798 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:10:56,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/sv-benchmarks/c/termination-crafted/Bangalore-1.c [2022-11-19 08:10:56,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/data/667674e5c/ebfc59099c6a48a5b60cb484e5924f59/FLAGd4bec1c90 [2022-11-19 08:10:57,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/data/667674e5c/ebfc59099c6a48a5b60cb484e5924f59 [2022-11-19 08:10:57,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:10:57,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:10:57,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:10:57,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:10:57,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:10:57,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5b0475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57, skipping insertion in model container [2022-11-19 08:10:57,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:10:57,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:10:57,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:10:57,420 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:10:57,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:10:57,444 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:10:57,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57 WrapperNode [2022-11-19 08:10:57,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:10:57,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:10:57,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:10:57,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:10:57,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,475 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-19 08:10:57,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:10:57,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:10:57,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:10:57,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:10:57,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:10:57,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:10:57,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:10:57,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:10:57,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (1/1) ... [2022-11-19 08:10:57,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:10:57,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:57,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:10:57,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:10:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:10:57,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:10:57,645 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:10:57,647 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:10:57,776 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:10:57,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:10:57,803 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:10:57,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:10:57 BoogieIcfgContainer [2022-11-19 08:10:57,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:10:57,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:10:57,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:10:57,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:10:57,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:10:57" (1/3) ... [2022-11-19 08:10:57,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cf0e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:10:57, skipping insertion in model container [2022-11-19 08:10:57,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:10:57" (2/3) ... [2022-11-19 08:10:57,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cf0e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:10:57, skipping insertion in model container [2022-11-19 08:10:57,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:10:57" (3/3) ... [2022-11-19 08:10:57,818 INFO L112 eAbstractionObserver]: Analyzing ICFG Bangalore-1.c [2022-11-19 08:10:57,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:10:57,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 08:10:57,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:10:57,916 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;@13443980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:10:57,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 08:10:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:10:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:10:57,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:10:57,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:10:57,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-19 08:10:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:10:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1822505, now seen corresponding path program 1 times [2022-11-19 08:10:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:10:57,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295904191] [2022-11-19 08:10:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:10:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:58,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:10:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:10:58,080 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:10:58,082 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:10:58,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-19 08:10:58,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-19 08:10:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:10:58,091 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:10:58,095 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:10:58,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:10:58 BoogieIcfgContainer [2022-11-19 08:10:58,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:10:58,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:10:58,118 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:10:58,118 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:10:58,119 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:10:57" (3/4) ... [2022-11-19 08:10:58,121 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 08:10:58,170 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:10:58,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:10:58,174 INFO L158 Benchmark]: Toolchain (without parser) took 995.16ms. Allocated memory is still 100.7MB. Free memory was 59.8MB in the beginning and 50.4MB in the end (delta: 9.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:10:58,177 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:10:58,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.07ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 76.8MB in the end (delta: -17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:10:58,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.73ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 75.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:10:58,179 INFO L158 Benchmark]: Boogie Preprocessor took 22.02ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 74.7MB in the end (delta: 925.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:10:58,180 INFO L158 Benchmark]: RCFGBuilder took 306.97ms. Allocated memory is still 100.7MB. Free memory was 74.7MB in the beginning and 65.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:10:58,180 INFO L158 Benchmark]: TraceAbstraction took 306.54ms. Allocated memory is still 100.7MB. Free memory was 64.6MB in the beginning and 52.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:10:58,181 INFO L158 Benchmark]: Witness Printer took 53.09ms. Allocated memory is still 100.7MB. Free memory was 52.0MB in the beginning and 50.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:10:58,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.07ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 76.8MB in the end (delta: -17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.73ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 75.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.02ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 74.7MB in the end (delta: 925.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.97ms. Allocated memory is still 100.7MB. Free memory was 74.7MB in the beginning and 65.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 306.54ms. Allocated memory is still 100.7MB. Free memory was 64.6MB in the beginning and 52.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 53.09ms. Allocated memory is still 100.7MB. Free memory was 52.0MB in the beginning and 50.4MB in the end (delta: 1.6MB). 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: 19]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] int y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE y < 1 VAL [x=0, y=-2147483648] [L18] COND TRUE x >= 0 VAL [x=0, y=-2147483648] [L19] x - y VAL [x=0, y=-2147483648] - UnprovableResult [Line: 19]: 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, 9 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 08:10:58,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23bb460d-24c2-4e7d-86ab-681011be3d65/bin/utaipan-I9t0OCRTmS/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)