./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX --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 be697832df03472dc58f43158f0adfa42b7c7091fa786bcdc0c28a0da79393b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:39:52,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:39:52,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:39:52,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:39:52,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:39:52,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:39:52,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:39:52,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:39:52,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:39:52,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:39:52,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:39:52,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:39:52,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:39:52,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:39:52,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:39:52,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:39:52,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:39:52,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:39:52,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:39:52,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:39:52,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:39:52,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:39:52,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:39:52,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:39:52,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:39:52,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:39:52,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:39:52,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:39:52,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:39:52,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:39:52,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:39:52,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:39:52,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:39:52,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:39:52,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:39:52,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:39:52,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:39:52,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:39:52,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:39:52,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:39:52,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:39:52,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:39:52,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:39:52,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:39:52,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:39:52,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:39:52,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:39:52,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:39:52,838 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:39:52,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:39:52,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:39:52,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:39:52,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:39:52,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:39:52,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:39:52,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:39:52,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:39:52,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:39:52,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:39:52,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:39:52,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:39:52,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:39:52,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:39:52,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:39:52,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:39:52,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:39:52,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:39:52,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:39:52,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:39:52,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:39:52,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:39:52,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:39:52,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:39:52,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:39:52,844 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_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be697832df03472dc58f43158f0adfa42b7c7091fa786bcdc0c28a0da79393b3 [2021-11-09 08:39:53,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:39:53,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:39:53,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:39:53,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:39:53,229 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:39:53,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_3_5.i [2021-11-09 08:39:53,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/d107a6d9d/ae43cf05b56f483b85a2aad66fa13020/FLAG5548a2ecc [2021-11-09 08:39:53,957 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:39:53,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/sv-benchmarks/c/floats-cdfpl/newton_3_5.i [2021-11-09 08:39:53,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/d107a6d9d/ae43cf05b56f483b85a2aad66fa13020/FLAG5548a2ecc [2021-11-09 08:39:54,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/d107a6d9d/ae43cf05b56f483b85a2aad66fa13020 [2021-11-09 08:39:54,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:39:54,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:39:54,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:39:54,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:39:54,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:39:54,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5f870f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54, skipping insertion in model container [2021-11-09 08:39:54,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:39:54,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:39:54,576 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_64acafe2-08bb-45d4-bfc9-f51d4216a847/sv-benchmarks/c/floats-cdfpl/newton_3_5.i[1266,1279] [2021-11-09 08:39:54,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:39:54,588 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:39:54,609 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_64acafe2-08bb-45d4-bfc9-f51d4216a847/sv-benchmarks/c/floats-cdfpl/newton_3_5.i[1266,1279] [2021-11-09 08:39:54,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:39:54,626 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:39:54,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54 WrapperNode [2021-11-09 08:39:54,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:39:54,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:39:54,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:39:54,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:39:54,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:39:54,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:39:54,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:39:54,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:39:54,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:39:54,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:39:54,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:39:54,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:39:54,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (1/1) ... [2021-11-09 08:39:54,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:39:54,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:54,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:39:54,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:39:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:39:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:39:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:39:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:39:55,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:39:55,023 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-09 08:39:55,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:39:55 BoogieIcfgContainer [2021-11-09 08:39:55,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:39:55,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:39:55,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:39:55,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:39:55,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:39:54" (1/3) ... [2021-11-09 08:39:55,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4e0986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:39:55, skipping insertion in model container [2021-11-09 08:39:55,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:54" (2/3) ... [2021-11-09 08:39:55,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4e0986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:39:55, skipping insertion in model container [2021-11-09 08:39:55,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:39:55" (3/3) ... [2021-11-09 08:39:55,035 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_5.i [2021-11-09 08:39:55,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:39:55,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:39:55,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:39:55,105 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 [2021-11-09 08:39:55,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:39:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-09 08:39:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:39:55,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:55,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:55,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:39:55,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-09 08:39:55,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:55,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110479322] [2021-11-09 08:39:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:55,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:55,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:55,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110479322] [2021-11-09 08:39:55,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110479322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:39:55,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:39:55,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:39:55,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438225803] [2021-11-09 08:39:55,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:39:55,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:39:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:39:55,391 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 6.0) internal successors, (12), 2 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) [2021-11-09 08:39:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:55,424 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-09 08:39:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:39:55,426 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) Word has length 12 [2021-11-09 08:39:55,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:55,435 INFO L225 Difference]: With dead ends: 31 [2021-11-09 08:39:55,435 INFO L226 Difference]: Without dead ends: 13 [2021-11-09 08:39:55,451 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 [2021-11-09 08:39:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-09 08:39:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-09 08:39:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 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) [2021-11-09 08:39:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-09 08:39:55,518 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-09 08:39:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:55,519 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-09 08:39:55,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-09 08:39:55,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-09 08:39:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:39:55,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:55,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:55,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:39:55,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:39:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-09 08:39:55,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:55,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413459229] [2021-11-09 08:39:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:55,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:39:55,556 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:39:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:39:55,626 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:39:55,626 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:39:55,629 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:39:55,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:39:55,635 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 08:39:55,638 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:39:55,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:39:55 BoogieIcfgContainer [2021-11-09 08:39:55,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:39:55,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:39:55,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:39:55,673 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:39:55,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:39:55" (3/4) ... [2021-11-09 08:39:55,677 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 08:39:55,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:39:55,680 INFO L168 Benchmark]: Toolchain (without parser) took 1378.78 ms. Allocated memory is still 117.4 MB. Free memory was 86.6 MB in the beginning and 57.6 MB in the end (delta: 29.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-11-09 08:39:55,681 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 48.1 MB in the beginning and 48.1 MB in the end (delta: 40.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:39:55,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.71 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 92.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:39:55,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.62 ms. Allocated memory is still 117.4 MB. Free memory was 92.4 MB in the beginning and 90.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:39:55,684 INFO L168 Benchmark]: Boogie Preprocessor took 26.32 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:39:55,685 INFO L168 Benchmark]: RCFGBuilder took 331.59 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 80.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:39:55,686 INFO L168 Benchmark]: TraceAbstraction took 644.75 ms. Allocated memory is still 117.4 MB. Free memory was 79.8 MB in the beginning and 57.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-09 08:39:55,687 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 117.4 MB. Free memory was 57.9 MB in the beginning and 57.6 MB in the end (delta: 317.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:39:55,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 48.1 MB in the beginning and 48.1 MB in the end (delta: 40.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.71 ms. Allocated memory is still 117.4 MB. Free memory was 86.3 MB in the beginning and 92.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.62 ms. Allocated memory is still 117.4 MB. Free memory was 92.4 MB in the beginning and 90.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.32 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 331.59 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 80.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 644.75 ms. Allocated memory is still 117.4 MB. Free memory was 79.8 MB in the beginning and 57.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.19 ms. Allocated memory is still 117.4 MB. Free memory was 57.9 MB in the beginning and 57.6 MB in the end (delta: 317.8 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 37. 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); [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; [L35] x = x - f(x)/fp(x) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 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=17occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2021-11-09 08:39:55,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/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_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX --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 be697832df03472dc58f43158f0adfa42b7c7091fa786bcdc0c28a0da79393b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:39:58,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:39:58,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:39:58,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:39:58,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:39:58,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:39:58,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:39:58,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:39:58,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:39:58,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:39:58,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:39:58,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:39:58,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:39:58,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:39:58,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:39:58,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:39:58,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:39:58,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:39:58,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:39:58,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:39:58,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:39:58,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:39:58,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:39:58,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:39:58,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:39:58,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:39:58,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:39:58,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:39:58,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:39:58,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:39:58,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:39:58,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:39:58,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:39:58,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:39:58,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:39:58,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:39:58,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:39:58,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:39:58,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:39:58,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:39:58,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:39:58,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 08:39:58,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:39:58,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:39:58,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:39:58,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:39:58,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:39:58,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:39:58,816 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:39:58,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:39:58,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:39:58,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:39:58,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:39:58,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:39:58,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:39:58,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:39:58,820 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:39:58,820 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:39:58,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:39:58,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:39:58,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:39:58,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:39:58,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:39:58,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:39:58,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:39:58,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:39:58,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:39:58,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:39:58,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:39:58,824 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:39:58,824 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:39:58,825 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:39:58,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:39:58,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:39:58,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:39:58,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:39:58,826 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_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be697832df03472dc58f43158f0adfa42b7c7091fa786bcdc0c28a0da79393b3 [2021-11-09 08:39:59,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:39:59,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:39:59,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:39:59,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:39:59,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:39:59,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_3_5.i [2021-11-09 08:39:59,458 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/a9104b35f/06113af536ab44dfb6360da206b84cbe/FLAG07ecb6f45 [2021-11-09 08:40:00,030 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:40:00,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/sv-benchmarks/c/floats-cdfpl/newton_3_5.i [2021-11-09 08:40:00,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/a9104b35f/06113af536ab44dfb6360da206b84cbe/FLAG07ecb6f45 [2021-11-09 08:40:00,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/data/a9104b35f/06113af536ab44dfb6360da206b84cbe [2021-11-09 08:40:00,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:40:00,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:40:00,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:40:00,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:40:00,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:40:00,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d541aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00, skipping insertion in model container [2021-11-09 08:40:00,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:40:00,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:40:00,672 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_64acafe2-08bb-45d4-bfc9-f51d4216a847/sv-benchmarks/c/floats-cdfpl/newton_3_5.i[1266,1279] [2021-11-09 08:40:00,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:40:00,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:40:00,735 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_64acafe2-08bb-45d4-bfc9-f51d4216a847/sv-benchmarks/c/floats-cdfpl/newton_3_5.i[1266,1279] [2021-11-09 08:40:00,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:40:00,752 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:40:00,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00 WrapperNode [2021-11-09 08:40:00,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:40:00,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:40:00,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:40:00,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:40:00,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:40:00,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:40:00,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:40:00,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:40:00,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:40:00,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:40:00,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:40:00,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:40:00,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (1/1) ... [2021-11-09 08:40:00,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:40:00,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:40:00,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:40:00,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:40:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:40:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:40:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:40:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:40:15,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:40:15,670 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-09 08:40:15,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:40:15 BoogieIcfgContainer [2021-11-09 08:40:15,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:40:15,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:40:15,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:40:15,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:40:15,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:40:00" (1/3) ... [2021-11-09 08:40:15,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d4b0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:40:15, skipping insertion in model container [2021-11-09 08:40:15,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:40:00" (2/3) ... [2021-11-09 08:40:15,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d4b0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:40:15, skipping insertion in model container [2021-11-09 08:40:15,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:40:15" (3/3) ... [2021-11-09 08:40:15,682 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_5.i [2021-11-09 08:40:15,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:40:15,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:40:15,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:40:15,770 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 [2021-11-09 08:40:15,772 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:40:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-09 08:40:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:40:15,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:15,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:15,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:40:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-09 08:40:15,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:15,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935052765] [2021-11-09 08:40:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:15,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:15,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:15,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:15,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:40:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:19,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 08:40:19,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:19,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:20,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:20,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935052765] [2021-11-09 08:40:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935052765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:20,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:20,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:40:20,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863356809] [2021-11-09 08:40:20,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:40:20,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:40:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:40:20,077 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 6.0) internal successors, (12), 2 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) [2021-11-09 08:40:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:20,094 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-09 08:40:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:40:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) Word has length 12 [2021-11-09 08:40:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:20,106 INFO L225 Difference]: With dead ends: 31 [2021-11-09 08:40:20,107 INFO L226 Difference]: Without dead ends: 13 [2021-11-09 08:40:20,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:40:20,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-09 08:40:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-09 08:40:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 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) [2021-11-09 08:40:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-09 08:40:20,147 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-09 08:40:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:20,148 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-09 08:40:20,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-09 08:40:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-09 08:40:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:40:20,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:20,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:20,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 08:40:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:20,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:40:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-09 08:40:20,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:20,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364267259] [2021-11-09 08:40:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:20,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:20,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:20,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:20,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64acafe2-08bb-45d4-bfc9-f51d4216a847/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process