./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb642764a70597a56a9c7e88ddf473ddd44e8ae88be573923352b61cd2189845 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:57,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:57,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:57,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:57,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:57,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:57,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:57,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:57,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:57,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:57,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:57,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:57,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:57,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:57,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:57,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:57,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:57,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:57,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:57,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:57,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:57,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:57,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:57,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:57,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:57,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:57,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:57,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:57,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:57,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:57,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:57,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:57,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:57,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:57,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:57,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:57,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:57,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:57,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:57,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:57,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:57,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:45:57,954 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:57,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:57,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:57,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:57,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:57,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:57,956 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:57,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:57,957 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:57,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:45:57,958 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:57,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:57,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:45:57,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:45:57,959 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:57,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:45:57,959 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:45:57,959 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:45:57,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:57,960 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:45:57,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:45:57,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:45:57,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:57,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:45:57,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:57,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:45:57,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:45:57,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:45:57,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:57,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:45:57,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:57,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:57,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:57,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:57,963 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:45:57,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:57,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:45:57,964 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:45:57,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:45:57,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:45:57,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:57,973 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_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb642764a70597a56a9c7e88ddf473ddd44e8ae88be573923352b61cd2189845 [2022-11-03 01:45:58,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:58,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:58,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:58,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:58,301 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:58,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c [2022-11-03 01:45:58,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/data/c2650acb1/9a6ecab237f24cefb04fe09734ee9201/FLAG1c45815dc [2022-11-03 01:45:58,826 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:58,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c [2022-11-03 01:45:58,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/data/c2650acb1/9a6ecab237f24cefb04fe09734ee9201/FLAG1c45815dc [2022-11-03 01:45:59,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/data/c2650acb1/9a6ecab237f24cefb04fe09734ee9201 [2022-11-03 01:45:59,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:59,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:59,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:59,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:59,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:59,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9ebdfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59, skipping insertion in model container [2022-11-03 01:45:59,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:59,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:59,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c[718,731] [2022-11-03 01:45:59,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:59,469 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:59,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c[718,731] [2022-11-03 01:45:59,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:59,502 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:59,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59 WrapperNode [2022-11-03 01:45:59,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:59,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:59,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:59,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:59,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,538 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-11-03 01:45:59,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:59,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:59,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:59,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:59,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:59,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:59,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:59,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:59,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (1/1) ... [2022-11-03 01:45:59,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:59,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:59,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure A [2022-11-03 01:45:59,641 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2022-11-03 01:45:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:59,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:45:59,707 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:59,709 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:45:59,860 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:45:59,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:45:59,875 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:45:59,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:59 BoogieIcfgContainer [2022-11-03 01:45:59,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:45:59,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:45:59,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:45:59,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:45:59,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:59" (1/3) ... [2022-11-03 01:45:59,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fe245a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:59, skipping insertion in model container [2022-11-03 01:45:59,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:59" (2/3) ... [2022-11-03 01:45:59,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fe245a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:59, skipping insertion in model container [2022-11-03 01:45:59,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:59" (3/3) ... [2022-11-03 01:45:59,887 INFO L112 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.c [2022-11-03 01:45:59,905 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:45:59,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:45:59,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:45:59,992 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;@16ce81bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:45:59,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:45:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:46:00,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:00,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:00,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1944176839, now seen corresponding path program 1 times [2022-11-03 01:46:00,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:00,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961980464] [2022-11-03 01:46:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:46:00,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:00,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961980464] [2022-11-03 01:46:00,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961980464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:46:00,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666364267] [2022-11-03 01:46:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:00,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:46:00,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:46:00,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:46:00,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:46:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:00,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:46:00,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:46:00,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:46:00,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666364267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:00,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:46:00,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-03 01:46:00,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868906084] [2022-11-03 01:46:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:00,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:00,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:00,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:00,798 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:00,933 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-03 01:46:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:46:00,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-03 01:46:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:00,945 INFO L225 Difference]: With dead ends: 36 [2022-11-03 01:46:00,945 INFO L226 Difference]: Without dead ends: 16 [2022-11-03 01:46:00,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:46:00,954 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:00,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 26 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-03 01:46:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-03 01:46:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:46:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-03 01:46:01,002 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 15 [2022-11-03 01:46:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:01,003 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-03 01:46:01,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:46:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-03 01:46:01,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 01:46:01,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:01,008 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:01,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:46:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 01:46:01,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash -554895117, now seen corresponding path program 1 times [2022-11-03 01:46:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:01,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325393645] [2022-11-03 01:46:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:46:01,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:46:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:46:01,348 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:46:01,349 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:46:01,350 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:46:01,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:46:01,361 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 01:46:01,367 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:46:01,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:46:01 BoogieIcfgContainer [2022-11-03 01:46:01,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:46:01,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:46:01,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:46:01,423 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:46:01,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:59" (3/4) ... [2022-11-03 01:46:01,426 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 01:46:01,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:46:01,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:46:01,481 INFO L158 Benchmark]: Toolchain (without parser) took 2269.85ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 60.1MB in the beginning and 83.3MB in the end (delta: -23.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:46:01,481 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:46:01,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.29ms. Allocated memory is still 102.8MB. Free memory was 59.9MB in the beginning and 77.4MB in the end (delta: -17.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 01:46:01,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.18ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 76.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:46:01,483 INFO L158 Benchmark]: Boogie Preprocessor took 25.66ms. Allocated memory is still 102.8MB. Free memory was 76.1MB in the beginning and 75.3MB in the end (delta: 780.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:46:01,484 INFO L158 Benchmark]: RCFGBuilder took 312.23ms. Allocated memory is still 102.8MB. Free memory was 74.9MB in the beginning and 65.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:46:01,484 INFO L158 Benchmark]: TraceAbstraction took 1537.56ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 64.4MB in the beginning and 85.4MB in the end (delta: -21.0MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-11-03 01:46:01,485 INFO L158 Benchmark]: Witness Printer took 61.28ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:46:01,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 102.8MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.29ms. Allocated memory is still 102.8MB. Free memory was 59.9MB in the beginning and 77.4MB in the end (delta: -17.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.18ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 76.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.66ms. Allocated memory is still 102.8MB. Free memory was 76.1MB in the beginning and 75.3MB in the end (delta: 780.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 312.23ms. Allocated memory is still 102.8MB. Free memory was 74.9MB in the beginning and 65.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1537.56ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 64.4MB in the beginning and 85.4MB in the end (delta: -21.0MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 61.28ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.1MB). 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: 33]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int g; [L28] int g = __VERIFIER_nondet_int(); [L29] int h = !g; VAL [g=0, g=5, h=0] [L30] CALL A(g,h) VAL [\old(a1)=5, \old(a2)=0, \old(g)=0, g=0] [L19] COND TRUE \read(a1) VAL [\old(a1)=5, \old(a2)=0, \old(g)=0, a1=5, a2=0, g=0] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=5, \old(g)=0, g=0] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=5, \old(g)=0, a1=0, a2=5, g=5] [L20] RET A(a2,a1) VAL [\old(a1)=5, \old(a2)=0, \old(g)=0, A(a2,a1)=-1, a1=5, a2=0, g=5] [L30] RET A(g,h) VAL [A(g,h)=-2, g=5, g=5, h=0] [L31] CALL A(g,h) VAL [\old(a1)=5, \old(a2)=0, \old(g)=5, g=5] [L19] COND TRUE \read(a1) VAL [\old(a1)=5, \old(a2)=0, \old(g)=5, a1=5, a2=0, g=5] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=5, \old(g)=5, g=5] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=5, \old(g)=5, a1=0, a2=5, g=5] [L20] RET A(a2,a1) VAL [\old(a1)=5, \old(a2)=0, \old(g)=5, A(a2,a1)=-3, a1=5, a2=0, g=5] [L31] RET A(g,h) VAL [A(g,h)=4, g=5, g=5, h=0] [L32] COND TRUE \read(g) VAL [g=5, g=5, h=0] [L33] reach_error() VAL [g=5, g=5, h=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 2 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 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! [2022-11-03 01:46:01,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8295606-fd23-4f52-ba1b-bebbfdccfeba/bin/utaipan-7li7fVZpFI/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