./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i --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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e13901d32c156230f10c0b36b99da90b7fc076965ff4471bab19cd4b374914b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:27:14,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:27:14,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:27:14,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:27:14,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:27:14,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:27:14,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:27:14,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:27:14,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:27:14,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:27:14,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:27:14,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:27:14,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:27:14,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:27:14,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:27:14,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:27:14,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:27:14,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:27:14,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:27:14,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:27:14,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:27:14,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:27:14,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:27:14,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:27:14,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:27:14,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:27:14,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:27:14,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:27:14,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:27:14,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:27:14,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:27:14,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:27:14,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:27:14,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:27:14,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:27:14,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:27:14,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:27:14,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:27:14,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:27:14,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:27:14,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:27:14,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:27:14,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:27:14,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:27:14,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:27:14,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:27:14,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:27:14,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:27:14,497 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:27:14,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:27:14,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:27:14,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:27:14,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:27:14,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:27:14,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:27:14,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:27:14,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:27:14,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:27:14,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:27:14,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:27:14,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:27:14,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:27:14,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:27:14,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:27:14,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:27:14,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:27:14,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:27:14,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:27:14,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:27:14,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:27:14,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:27:14,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:27:14,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:27:14,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:27:14,506 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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e13901d32c156230f10c0b36b99da90b7fc076965ff4471bab19cd4b374914b [2021-11-07 08:27:14,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:27:14,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:27:14,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:27:14,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:27:14,789 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:27:14,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2021-11-07 08:27:14,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/faf2f81a3/3ac86a08d7e54ce7b61d4bd4a7e0d2d9/FLAGa019cb3a0 [2021-11-07 08:27:15,365 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:27:15,366 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2021-11-07 08:27:15,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/faf2f81a3/3ac86a08d7e54ce7b61d4bd4a7e0d2d9/FLAGa019cb3a0 [2021-11-07 08:27:15,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/faf2f81a3/3ac86a08d7e54ce7b61d4bd4a7e0d2d9 [2021-11-07 08:27:15,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:27:15,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:27:15,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:27:15,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:27:15,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:27:15,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:15" (1/1) ... [2021-11-07 08:27:15,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3610fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:15, skipping insertion in model container [2021-11-07 08:27:15,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:15" (1/1) ... [2021-11-07 08:27:15,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:27:15,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:27:15,955 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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1224,1237] [2021-11-07 08:27:15,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:27:15,979 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:27:15,998 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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1224,1237] [2021-11-07 08:27:15,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:27:16,013 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:27:16,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16 WrapperNode [2021-11-07 08:27:16,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:27:16,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:27:16,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:27:16,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:27:16,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:27:16,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:27:16,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:27:16,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:27:16,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:27:16,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:27:16,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:27:16,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:27:16,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (1/1) ... [2021-11-07 08:27:16,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:27:16,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:27:16,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:27:16,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:27:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:27:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:27:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:27:16,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:27:16,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:27:16,318 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 08:27:16,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:16 BoogieIcfgContainer [2021-11-07 08:27:16,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:27:16,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:27:16,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:27:16,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:27:16,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:27:15" (1/3) ... [2021-11-07 08:27:16,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb42a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:16, skipping insertion in model container [2021-11-07 08:27:16,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:16" (2/3) ... [2021-11-07 08:27:16,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb42a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:16, skipping insertion in model container [2021-11-07 08:27:16,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:16" (3/3) ... [2021-11-07 08:27:16,328 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_2.i [2021-11-07 08:27:16,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:27:16,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:27:16,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:27:16,419 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=PETRI_NET, 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 08:27:16,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:27:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 08:27:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 08:27:16,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:16,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:16,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:27:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-07 08:27:16,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:16,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397066090] [2021-11-07 08:27:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:16,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:16,631 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 08:27:16,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:27:16,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397066090] [2021-11-07 08:27:16,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397066090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:27:16,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:27:16,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:27:16,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425140925] [2021-11-07 08:27:16,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:27:16,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:27:16,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:27:16,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:27:16,656 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 08:27:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:16,670 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-07 08:27:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:27:16,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-07 08:27:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:16,679 INFO L225 Difference]: With dead ends: 23 [2021-11-07 08:27:16,679 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 08:27:16,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:27:16,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 08:27:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 08:27:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 08:27:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-07 08:27:16,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-07 08:27:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:16,730 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-07 08:27:16,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 08:27:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-07 08:27:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 08:27:16,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:16,732 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:16,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:27:16,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:27:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-07 08:27:16,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:27:16,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129207911] [2021-11-07 08:27:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:16,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:27:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:27:16,798 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:27:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:27:16,859 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:27:16,859 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 08:27:16,861 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:27:16,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:27:16,867 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 08:27:16,869 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:27:16,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:27:16 BoogieIcfgContainer [2021-11-07 08:27:16,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:27:16,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:27:16,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:27:16,900 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:27:16,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:16" (3/4) ... [2021-11-07 08:27:16,908 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:27:16,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:27:16,911 INFO L168 Benchmark]: Toolchain (without parser) took 1195.72 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 66.7 MB in the beginning and 94.1 MB in the end (delta: -27.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:27:16,912 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:27:16,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.31 ms. Allocated memory is still 98.6 MB. Free memory was 66.5 MB in the beginning and 73.3 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:27:16,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.92 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:27:16,922 INFO L168 Benchmark]: Boogie Preprocessor took 21.13 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 71.0 MB in the end (delta: 661.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:27:16,924 INFO L168 Benchmark]: RCFGBuilder took 248.69 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 62.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:27:16,925 INFO L168 Benchmark]: TraceAbstraction took 577.42 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 61.5 MB in the beginning and 94.7 MB in the end (delta: -33.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:27:16,925 INFO L168 Benchmark]: Witness Printer took 8.60 ms. Allocated memory is still 121.6 MB. Free memory was 94.7 MB in the beginning and 94.1 MB in the end (delta: 641.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:27:16,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.31 ms. Allocated memory is still 98.6 MB. Free memory was 66.5 MB in the beginning and 73.3 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.92 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.13 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 71.0 MB in the end (delta: 661.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 248.69 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 62.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 577.42 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 61.5 MB in the beginning and 94.7 MB in the end (delta: -33.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 8.60 ms. Allocated memory is still 121.6 MB. Free memory was 94.7 MB in the beginning and 94.1 MB in the end (delta: 641.4 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: 42]: 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 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 08:27:16,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e13901d32c156230f10c0b36b99da90b7fc076965ff4471bab19cd4b374914b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:27:19,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:27:19,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:27:19,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:27:19,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:27:19,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:27:19,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:27:19,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:27:19,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:27:19,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:27:19,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:27:19,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:27:19,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:27:19,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:27:19,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:27:19,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:27:19,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:27:19,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:27:19,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:27:19,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:27:19,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:27:19,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:27:19,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:27:19,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:27:19,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:27:19,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:27:19,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:27:19,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:27:19,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:27:19,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:27:19,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:27:19,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:27:19,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:27:19,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:27:19,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:27:19,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:27:19,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:27:19,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:27:19,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:27:19,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:27:19,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:27:19,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 08:27:19,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:27:19,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:27:19,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:27:19,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:27:19,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:27:19,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:27:19,699 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:27:19,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:27:19,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:27:19,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:27:19,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:27:19,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:27:19,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:27:19,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:27:19,702 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 08:27:19,702 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 08:27:19,702 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:27:19,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:27:19,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:27:19,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:27:19,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:27:19,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:27:19,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:27:19,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:27:19,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:27:19,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:27:19,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:27:19,705 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 08:27:19,705 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 08:27:19,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:27:19,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:27:19,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:27:19,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:27:19,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 08:27:19,707 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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e13901d32c156230f10c0b36b99da90b7fc076965ff4471bab19cd4b374914b [2021-11-07 08:27:20,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:27:20,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:27:20,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:27:20,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:27:20,138 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:27:20,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2021-11-07 08:27:20,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/0de5b1598/3404857c58b9450c912c0dbab74ed04d/FLAG616d545df [2021-11-07 08:27:20,738 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:27:20,738 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2021-11-07 08:27:20,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/0de5b1598/3404857c58b9450c912c0dbab74ed04d/FLAG616d545df [2021-11-07 08:27:21,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/data/0de5b1598/3404857c58b9450c912c0dbab74ed04d [2021-11-07 08:27:21,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:27:21,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:27:21,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:27:21,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:27:21,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:27:21,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fefa9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21, skipping insertion in model container [2021-11-07 08:27:21,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:27:21,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:27:21,354 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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1224,1237] [2021-11-07 08:27:21,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:27:21,387 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:27:21,428 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_2ba06e2a-f52d-4c78-a31b-255d25b48d84/sv-benchmarks/c/floats-cdfpl/newton_1_2.i[1224,1237] [2021-11-07 08:27:21,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:27:21,497 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:27:21,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21 WrapperNode [2021-11-07 08:27:21,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:27:21,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:27:21,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:27:21,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:27:21,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:27:21,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:27:21,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:27:21,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:27:21,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:27:21,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:27:21,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:27:21,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:27:21,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (1/1) ... [2021-11-07 08:27:21,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:27:21,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:27:21,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:27:21,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:27:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 08:27:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:27:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:27:21,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:27:28,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:27:28,285 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 08:27:28,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:28 BoogieIcfgContainer [2021-11-07 08:27:28,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:27:28,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:27:28,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:27:28,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:27:28,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:27:21" (1/3) ... [2021-11-07 08:27:28,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9802548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:28, skipping insertion in model container [2021-11-07 08:27:28,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:21" (2/3) ... [2021-11-07 08:27:28,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9802548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:28, skipping insertion in model container [2021-11-07 08:27:28,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:28" (3/3) ... [2021-11-07 08:27:28,296 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_2.i [2021-11-07 08:27:28,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:27:28,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:27:28,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:27:28,358 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=PETRI_NET, 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 08:27:28,358 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:27:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 08:27:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 08:27:28,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:28,378 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:28,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:27:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-07 08:27:28,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:27:28,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168487956] [2021-11-07 08:27:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:28,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:27:28,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:27:28,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:27:28,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 08:27:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:27:29,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 08:27:29,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:27:29,778 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 08:27:29,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:27:29,861 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 08:27:29,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:27:29,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168487956] [2021-11-07 08:27:29,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168487956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:27:29,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:27:29,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:27:29,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955203473] [2021-11-07 08:27:29,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:27:29,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:27:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:27:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:27:29,901 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 08:27:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:27:29,916 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-07 08:27:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:27:29,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-07 08:27:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:27:29,928 INFO L225 Difference]: With dead ends: 23 [2021-11-07 08:27:29,928 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 08:27:29,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:27:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 08:27:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 08:27:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 08:27:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-07 08:27:29,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-07 08:27:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:27:29,968 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-07 08:27:29,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 08:27:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-07 08:27:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 08:27:29,970 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:27:29,970 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:27:30,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:27:30,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:27:30,185 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:27:30,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:27:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-07 08:27:30,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:27:30,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597855860] [2021-11-07 08:27:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:27:30,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:27:30,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:27:30,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:27:30,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba06e2a-f52d-4c78-a31b-255d25b48d84/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process