./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8 --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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:21,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:21,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:21,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:21,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:21,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:21,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:21,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:21,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:21,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:21,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:21,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:21,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:21,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:21,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:21,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:21,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:21,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:21,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:21,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:21,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:21,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:21,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:21,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:21,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:21,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:21,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:21,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:21,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:21,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:21,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:21,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:21,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:21,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:21,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:21,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:21,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:21,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:21,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:21,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:21,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:21,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:19:21,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:21,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:21,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:21,503 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:21,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:21,504 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:21,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:19:21,504 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:21,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:21,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:19:21,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:19:21,505 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:21,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:19:21,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:19:21,507 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:19:21,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:21,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:19:21,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:19:21,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:19:21,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:21,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:21,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:21,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:21,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:21,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:19:21,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:21,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:21,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:21,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:21,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:21,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:21,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:21,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:21,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:21,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:19:21,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:19:21,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:21,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:21,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:21,515 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-11-07 01:19:21,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:21,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:21,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:21,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:21,813 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:21,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-07 01:19:21,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/74f752bc8/4f59c74e82ae45919904781327b930cf/FLAG6fb59963b [2021-11-07 01:19:22,560 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:22,561 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-07 01:19:22,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/74f752bc8/4f59c74e82ae45919904781327b930cf/FLAG6fb59963b [2021-11-07 01:19:22,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/74f752bc8/4f59c74e82ae45919904781327b930cf [2021-11-07 01:19:22,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:22,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:22,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:22,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:22,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:22,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:22" (1/1) ... [2021-11-07 01:19:22,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd290bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:22, skipping insertion in model container [2021-11-07 01:19:22,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:22" (1/1) ... [2021-11-07 01:19:22,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:22,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:23,218 WARN L228 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_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-07 01:19:23,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:23,243 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:19:23,261 WARN L228 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_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-07 01:19:23,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:23,279 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:19:23,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23 WrapperNode [2021-11-07 01:19:23,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:23,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:23,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:19:23,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:19:23,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:23,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:19:23,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:19:23,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:19:23,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:19:23,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:19:23,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:19:23,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:19:23,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (1/1) ... [2021-11-07 01:19:23,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:23,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:19:23,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:19:23,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:19:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:19:23,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:19:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:19:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:19:23,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:19:23,783 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:19:23,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:23 BoogieIcfgContainer [2021-11-07 01:19:23,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:19:23,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:19:23,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:19:23,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:19:23,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:22" (1/3) ... [2021-11-07 01:19:23,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d686cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:23, skipping insertion in model container [2021-11-07 01:19:23,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:23" (2/3) ... [2021-11-07 01:19:23,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d686cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:23, skipping insertion in model container [2021-11-07 01:19:23,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:23" (3/3) ... [2021-11-07 01:19:23,796 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-11-07 01:19:23,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:19:23,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:19:23,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:19:23,879 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:19:23,879 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:19:23,894 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) [2021-11-07 01:19:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:19:23,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:23,900 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:19:23,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 56187, now seen corresponding path program 1 times [2021-11-07 01:19:23,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:23,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903019572] [2021-11-07 01:19:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:23,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:19:24,046 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:19:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:19:24,114 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:19:24,118 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:19:24,119 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:19:24,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:19:24,126 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:19:24,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:19:24,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:19:24 BoogieIcfgContainer [2021-11-07 01:19:24,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:19:24,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:19:24,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:19:24,162 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:19:24,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:23" (3/4) ... [2021-11-07 01:19:24,167 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:19:24,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:19:24,174 INFO L168 Benchmark]: Toolchain (without parser) took 1221.58 ms. Allocated memory was 102.8 MB in the beginning and 153.1 MB in the end (delta: 50.3 MB). Free memory was 71.6 MB in the beginning and 101.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:24,175 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:24,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.99 ms. Allocated memory was 102.8 MB in the beginning and 153.1 MB in the end (delta: 50.3 MB). Free memory was 71.3 MB in the beginning and 129.0 MB in the end (delta: -57.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:24,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.11 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 127.6 MB in the end (delta: 819.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:24,180 INFO L168 Benchmark]: Boogie Preprocessor took 39.65 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 126.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:24,181 INFO L168 Benchmark]: RCFGBuilder took 416.86 ms. Allocated memory is still 153.1 MB. Free memory was 126.3 MB in the beginning and 115.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:24,188 INFO L168 Benchmark]: TraceAbstraction took 364.18 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 101.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:24,189 INFO L168 Benchmark]: Witness Printer took 6.29 ms. Allocated memory is still 153.1 MB. Free memory was 101.7 MB in the beginning and 101.1 MB in the end (delta: 640.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:24,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.99 ms. Allocated memory was 102.8 MB in the beginning and 153.1 MB in the end (delta: 50.3 MB). Free memory was 71.3 MB in the beginning and 129.0 MB in the end (delta: -57.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.11 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 127.6 MB in the end (delta: 819.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.65 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 126.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 416.86 ms. Allocated memory is still 153.1 MB. Free memory was 126.3 MB in the beginning and 115.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 364.18 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 101.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.29 ms. Allocated memory is still 153.1 MB. Free memory was 101.7 MB in the beginning and 101.1 MB in the end (delta: 640.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 26]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L6] double d = 0.0; [L15] int x = 2; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L10] d = 1.0 [L22] d += (x == 2) [L24] d += (x > 3) [L26] COND TRUE !(d == 2.0) [L26] reach_error() - 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, 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 [2021-11-07 01:19:24,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/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 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_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8 --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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:26,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:26,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:26,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:26,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:26,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:26,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:26,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:26,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:26,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:26,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:26,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:26,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:26,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:26,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:26,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:26,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:26,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:26,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:26,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:26,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:26,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:26,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:26,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:26,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:26,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:26,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:26,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:26,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:26,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:26,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:26,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:26,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:26,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:26,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:26,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:26,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:26,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:26,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:26,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:26,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:26,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:19:27,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:27,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:27,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:27,035 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:27,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:27,035 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:27,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:27,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:27,036 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:27,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:27,037 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:19:27,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:19:27,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:27,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:27,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:27,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:27,039 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:27,039 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:19:27,039 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:19:27,039 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:19:27,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:27,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:27,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:27,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:27,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:19:27,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:27,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:27,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:27,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:27,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:27,042 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:19:27,042 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:19:27,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:27,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:27,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:27,043 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_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-11-07 01:19:27,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:27,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:27,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:27,493 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:27,494 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:27,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-07 01:19:27,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/722ddfd58/a4e3a017dc8640e78f40477f3288499a/FLAG5174ff316 [2021-11-07 01:19:28,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:28,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-07 01:19:28,138 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/722ddfd58/a4e3a017dc8640e78f40477f3288499a/FLAG5174ff316 [2021-11-07 01:19:28,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/data/722ddfd58/a4e3a017dc8640e78f40477f3288499a [2021-11-07 01:19:28,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:28,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:28,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:28,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:28,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:28,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fb53e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28, skipping insertion in model container [2021-11-07 01:19:28,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:28,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:28,767 WARN L228 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_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-07 01:19:28,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:28,789 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:19:28,850 WARN L228 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_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-07 01:19:28,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:28,872 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:19:28,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28 WrapperNode [2021-11-07 01:19:28,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:28,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:28,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:19:28,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:19:28,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:28,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:19:28,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:19:28,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:19:28,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:19:28,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:19:28,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:19:28,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:19:28,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (1/1) ... [2021-11-07 01:19:28,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:28,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:19:28,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:19:29,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:19:29,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:19:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:19:29,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:19:29,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:19:30,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:19:30,893 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:19:30,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:30 BoogieIcfgContainer [2021-11-07 01:19:30,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:19:30,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:19:30,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:19:30,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:19:30,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:28" (1/3) ... [2021-11-07 01:19:30,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765218db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:30, skipping insertion in model container [2021-11-07 01:19:30,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:28" (2/3) ... [2021-11-07 01:19:30,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765218db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:30, skipping insertion in model container [2021-11-07 01:19:30,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:30" (3/3) ... [2021-11-07 01:19:30,904 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-11-07 01:19:30,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:19:30,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:19:30,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:19:30,975 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:19:30,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:19:30,991 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) [2021-11-07 01:19:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:19:30,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:30,996 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:30,997 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-11-07 01:19:31,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:31,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118556621] [2021-11-07 01:19:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:31,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:31,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:31,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:31,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:19:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:31,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:19:31,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:31,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:45,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:45,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118556621] [2021-11-07 01:19:45,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118556621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:45,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:45,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:19:45,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660051041] [2021-11-07 01:19:45,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:19:45,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:45,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:19:45,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:19:45,459 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 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:56,582 WARN L207 SmtUtils]: Spent 6.59 s on a formula simplification. DAG size of input: 32 DAG size of output: 20 [2021-11-07 01:20:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:01,143 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-11-07 01:20:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:20:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:20:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:01,152 INFO L225 Difference]: With dead ends: 20 [2021-11-07 01:20:01,153 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:20:01,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:20:01,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:20:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:20:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:20:01,179 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-07 01:20:01,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:01,179 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:20:01,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:20:01,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:20:01,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:20:01,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:01,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:01,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:20:01,387 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:20:01,387 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 01:20:01,387 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:20:01,388 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 01:20:01,388 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-11-07 01:20:01,388 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-11-07 01:20:01,388 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-11-07 01:20:01,388 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-11-07 01:20:01,389 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2021-11-07 01:20:01,389 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 27) no Hoare annotation was computed. [2021-11-07 01:20:01,389 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 11) no Hoare annotation was computed. [2021-11-07 01:20:01,392 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:20:01,393 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:20:01,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:20:01 BoogieIcfgContainer [2021-11-07 01:20:01,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:20:01,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:20:01,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:20:01,397 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:20:01,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:30" (3/4) ... [2021-11-07 01:20:01,400 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:20:01,411 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 01:20:01,411 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-07 01:20:01,411 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:20:01,411 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:20:01,458 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:20:01,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:20:01,462 INFO L168 Benchmark]: Toolchain (without parser) took 32949.75 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 46.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:01,463 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 74.4 MB in the beginning and 74.4 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:01,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.70 ms. Allocated memory is still 92.3 MB. Free memory was 57.9 MB in the beginning and 76.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:01,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.43 ms. Allocated memory is still 92.3 MB. Free memory was 76.1 MB in the beginning and 74.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:01,471 INFO L168 Benchmark]: Boogie Preprocessor took 41.96 ms. Allocated memory is still 92.3 MB. Free memory was 74.5 MB in the beginning and 73.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:01,472 INFO L168 Benchmark]: RCFGBuilder took 1937.14 ms. Allocated memory is still 92.3 MB. Free memory was 73.5 MB in the beginning and 64.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:01,473 INFO L168 Benchmark]: TraceAbstraction took 30499.27 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 49.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:01,474 INFO L168 Benchmark]: Witness Printer took 64.43 ms. Allocated memory is still 92.3 MB. Free memory was 49.0 MB in the beginning and 46.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:01,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 74.4 MB in the beginning and 74.4 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.70 ms. Allocated memory is still 92.3 MB. Free memory was 57.9 MB in the beginning and 76.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.43 ms. Allocated memory is still 92.3 MB. Free memory was 76.1 MB in the beginning and 74.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.96 ms. Allocated memory is still 92.3 MB. Free memory was 74.5 MB in the beginning and 73.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1937.14 ms. Allocated memory is still 92.3 MB. Free memory was 73.5 MB in the beginning and 64.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30499.27 ms. Allocated memory is still 92.3 MB. Free memory was 63.5 MB in the beginning and 49.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 64.43 ms. Allocated memory is still 92.3 MB. Free memory was 49.0 MB in the beginning and 46.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 18 SDslu, 16 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 9, 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 125 SizeOfPredicates, 3 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-07 01:20:01,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5d2c0c2-e341-4b3e-9f91-d7f97464bcb9/bin/utaipan-UUZaoUuFF8/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 Result: TRUE