./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta --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 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a --- 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-dbf71c6-m [2022-10-17 17:39:01,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:01,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:01,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:01,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:01,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:01,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:01,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:01,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:01,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:01,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:01,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:01,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:01,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:01,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:01,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:01,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:01,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:01,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:01,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:01,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:01,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:01,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:01,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:01,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:01,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:01,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:01,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:01,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:01,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:01,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:01,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:01,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:01,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:01,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:01,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:01,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:01,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:01,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:01,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:01,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:01,488 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:39:01,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:01,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:01,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:01,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:01,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:01,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:01,538 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:01,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:01,539 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:01,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:39:01,540 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:01,540 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:01,540 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:39:01,541 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:39:01,541 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:01,541 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:39:01,541 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:39:01,541 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:39:01,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:01,542 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:39:01,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:39:01,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:39:01,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:01,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:01,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:01,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:01,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:39:01,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:01,546 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:01,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:01,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:01,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:01,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:01,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:01,547 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:39:01,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:01,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:01,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:39:01,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:39:01,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:01,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:01,549 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_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2022-10-17 17:39:01,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:01,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:01,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:01,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:01,884 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:01,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2022-10-17 17:39:01,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/d86acdc85/72633c74a0314e5c88eb211329d9a961/FLAG97e7a96f2 [2022-10-17 17:39:02,453 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:02,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/sv-benchmarks/c/floats-cdfpl/square_8.i [2022-10-17 17:39:02,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/d86acdc85/72633c74a0314e5c88eb211329d9a961/FLAG97e7a96f2 [2022-10-17 17:39:02,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/d86acdc85/72633c74a0314e5c88eb211329d9a961 [2022-10-17 17:39:02,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:02,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:02,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:02,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:02,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:02,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:02" (1/1) ... [2022-10-17 17:39:02,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44197468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:02, skipping insertion in model container [2022-10-17 17:39:02,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:02" (1/1) ... [2022-10-17 17:39:02,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:02,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:03,139 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_3ff513e6-6865-45f7-b701-0b76b46ec052/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-10-17 17:39:03,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:03,154 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:03,173 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_3ff513e6-6865-45f7-b701-0b76b46ec052/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-10-17 17:39:03,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:03,192 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:03,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03 WrapperNode [2022-10-17 17:39:03,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:03,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:03,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:03,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:03,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,233 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2022-10-17 17:39:03,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:03,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:03,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:03,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:03,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:03,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:03,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:03,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:03,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:03,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:03,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:03,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:03,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:39:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:03,413 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:03,415 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:03,513 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:03,586 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:03,586 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:39:03,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:03 BoogieIcfgContainer [2022-10-17 17:39:03,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:03,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:03,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:03,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:03,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:02" (1/3) ... [2022-10-17 17:39:03,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2526b5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:03, skipping insertion in model container [2022-10-17 17:39:03,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:03" (2/3) ... [2022-10-17 17:39:03,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2526b5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:03, skipping insertion in model container [2022-10-17 17:39:03,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:03" (3/3) ... [2022-10-17 17:39:03,606 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8.i [2022-10-17 17:39:03,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:03,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:03,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:03,699 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;@6ff80eeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:03,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:39:03,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-10-17 17:39:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:39:03,712 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:03,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:39:03,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2022-10-17 17:39:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:03,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6000062] [2022-10-17 17:39:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:39:03,851 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:39:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:39:03,889 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:39:03,891 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:39:03,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:39:03,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:39:03,900 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 17:39:03,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:39:03,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:39:03 BoogieIcfgContainer [2022-10-17 17:39:03,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:39:03,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:39:03,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:39:03,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:39:03,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:03" (3/4) ... [2022-10-17 17:39:03,929 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 17:39:03,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:39:03,931 INFO L158 Benchmark]: Toolchain (without parser) took 1105.95ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 39.7MB in the end (delta: 24.6MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-10-17 17:39:03,931 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 60.9MB in the end (delta: 39.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:03,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.42ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 66.5MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:39:03,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.88ms. Allocated memory is still 92.3MB. Free memory was 66.5MB in the beginning and 65.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:03,934 INFO L158 Benchmark]: Boogie Preprocessor took 24.20ms. Allocated memory is still 92.3MB. Free memory was 65.0MB in the beginning and 64.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:39:03,934 INFO L158 Benchmark]: RCFGBuilder took 329.10ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 54.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:39:03,935 INFO L158 Benchmark]: TraceAbstraction took 332.04ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 40.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 17:39:03,936 INFO L158 Benchmark]: Witness Printer took 4.96ms. Allocated memory is still 92.3MB. Free memory was 39.9MB in the beginning and 39.7MB in the end (delta: 190.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:03,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 60.9MB in the end (delta: 39.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.42ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 66.5MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.88ms. Allocated memory is still 92.3MB. Free memory was 66.5MB in the beginning and 65.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.20ms. Allocated memory is still 92.3MB. Free memory was 65.0MB in the beginning and 64.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.10ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 54.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 332.04ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 40.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.96ms. Allocated memory is still 92.3MB. Free memory was 39.9MB in the beginning and 39.7MB in the end (delta: 190.1kB). 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 - UnprovableResult [Line: 38]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L37] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L38] reach_error() VAL [IN=53, x=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 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=6occurred 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, 3 NumberOfCodeBlocks, 3 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 could not prove your program: unable to determine feasibility of some traces [2022-10-17 17:39:03,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta --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 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a --- 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-dbf71c6-m [2022-10-17 17:39:06,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:06,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:06,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:06,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:06,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:06,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:06,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:06,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:06,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:06,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:06,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:06,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:06,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:06,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:06,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:06,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:06,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:06,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:06,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:06,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:06,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:06,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:06,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:06,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:06,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:06,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:06,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:06,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:06,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:06,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:06,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:06,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:06,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:06,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:06,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:06,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:06,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:06,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:06,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:06,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:06,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:39:06,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:06,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:06,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:06,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:06,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:06,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:06,850 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:06,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:06,850 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:06,851 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:06,852 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:06,853 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:06,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:06,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:39:06,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:39:06,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:06,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:06,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:06,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:06,857 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:39:06,857 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:39:06,857 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:39:06,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:39:06,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:06,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:06,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:06,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:06,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:39:06,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:06,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:06,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:06,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:06,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:06,861 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:39:06,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:39:06,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:06,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:06,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:39:06,863 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c3dca82feaee551f8126572f1dcc09ca65938303a72a158f2c77643864b20a [2022-10-17 17:39:07,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:07,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:07,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:07,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:07,353 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:07,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2022-10-17 17:39:07,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/3f625afbe/4d1699246e1d4e469419ecfd612046ea/FLAG2bfc0135b [2022-10-17 17:39:08,134 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:08,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/sv-benchmarks/c/floats-cdfpl/square_8.i [2022-10-17 17:39:08,144 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/3f625afbe/4d1699246e1d4e469419ecfd612046ea/FLAG2bfc0135b [2022-10-17 17:39:08,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/data/3f625afbe/4d1699246e1d4e469419ecfd612046ea [2022-10-17 17:39:08,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:08,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:08,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:08,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:08,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:08,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3281f063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08, skipping insertion in model container [2022-10-17 17:39:08,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:08,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:08,738 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_3ff513e6-6865-45f7-b701-0b76b46ec052/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-10-17 17:39:08,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:08,758 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:08,800 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_3ff513e6-6865-45f7-b701-0b76b46ec052/sv-benchmarks/c/floats-cdfpl/square_8.i[1625,1638] [2022-10-17 17:39:08,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:08,849 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:08,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08 WrapperNode [2022-10-17 17:39:08,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:08,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:08,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:08,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:08,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,892 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2022-10-17 17:39:08,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:08,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:08,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:08,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:08,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,923 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:08,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:08,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:08,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:08,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (1/1) ... [2022-10-17 17:39:08,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:08,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:08,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:08,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:39:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:09,093 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:09,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:11,382 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:11,388 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:11,388 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:39:11,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:11 BoogieIcfgContainer [2022-10-17 17:39:11,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:11,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:11,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:11,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:11,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:08" (1/3) ... [2022-10-17 17:39:11,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdd5db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:11, skipping insertion in model container [2022-10-17 17:39:11,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:08" (2/3) ... [2022-10-17 17:39:11,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdd5db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:11, skipping insertion in model container [2022-10-17 17:39:11,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:11" (3/3) ... [2022-10-17 17:39:11,401 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8.i [2022-10-17 17:39:11,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:11,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:11,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:11,498 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;@52f4c457, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:11,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:39:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2022-10-17 17:39:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:39:11,518 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:11,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:39:11,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:11,537 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2022-10-17 17:39:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:39:11,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176388083] [2022-10-17 17:39:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:11,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:39:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:39:11,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:39:11,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:39:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:12,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:39:12,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:39:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:12,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:39:12,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:39:12,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176388083] [2022-10-17 17:39:12,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176388083] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:12,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:12,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:39:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653369856] [2022-10-17 17:39:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:12,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:39:12,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:39:12,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:39:12,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:12,446 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-10-17 17:39:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:12,462 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-10-17 17:39:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:39:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-10-17 17:39:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:12,474 INFO L225 Difference]: With dead ends: 19 [2022-10-17 17:39:12,475 INFO L226 Difference]: Without dead ends: 7 [2022-10-17 17:39:12,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:12,483 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:12,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:39:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-10-17 17:39:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-10-17 17:39:12,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2022-10-17 17:39:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-10-17 17:39:12,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-10-17 17:39:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:12,521 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-10-17 17:39:12,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-10-17 17:39:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-10-17 17:39:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:39:12,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:12,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:39:12,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:39:12,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:39:12,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2022-10-17 17:39:12,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:39:12,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522329106] [2022-10-17 17:39:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:12,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:39:12,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:39:12,744 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:39:12,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff513e6-6865-45f7-b701-0b76b46ec052/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process