./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_3.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_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/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_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/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_c3b14d78-e29d-4898-b701-208430ea5830/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 3e458df6584d157eca784437de0c11ff333faa57d336463992016d76ca982f53 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:37:23,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:37:23,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:37:23,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:37:23,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:37:23,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:37:23,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:37:23,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:37:23,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:37:23,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:37:23,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:37:23,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:37:23,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:37:23,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:37:23,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:37:23,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:37:23,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:37:23,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:37:23,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:37:23,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:37:23,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:37:23,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:37:23,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:37:23,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:37:23,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:37:23,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:37:23,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:37:23,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:37:23,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:37:23,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:37:23,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:37:23,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:37:23,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:37:23,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:37:23,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:37:23,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:37:23,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:37:23,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:37:23,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:37:23,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:37:23,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:37:23,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:37:23,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:37:23,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:37:23,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:37:23,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:37:23,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:37:23,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:37:23,787 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:37:23,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:37:23,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:37:23,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:37:23,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:37:23,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:37:23,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:37:23,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:37:23,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:37:23,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:37:23,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:37:23,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:37:23,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:37:23,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:37:23,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:37:23,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:37:23,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:37:23,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:37:23,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:37:23,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:37:23,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:37:23,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:37:23,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:37:23,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:37:23,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:37:23,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:37:23,796 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_c3b14d78-e29d-4898-b701-208430ea5830/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e458df6584d157eca784437de0c11ff333faa57d336463992016d76ca982f53 [2021-11-09 10:37:24,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:37:24,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:37:24,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:37:24,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:37:24,140 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:37:24,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-11-09 10:37:24,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/5dbac281d/d6d2ac0bbdb240119441e82ba8516e16/FLAGae40fcffc [2021-11-09 10:37:24,721 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:37:24,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-11-09 10:37:24,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/5dbac281d/d6d2ac0bbdb240119441e82ba8516e16/FLAGae40fcffc [2021-11-09 10:37:25,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/5dbac281d/d6d2ac0bbdb240119441e82ba8516e16 [2021-11-09 10:37:25,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:37:25,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:37:25,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:37:25,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:37:25,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:37:25,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ec83e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25, skipping insertion in model container [2021-11-09 10:37:25,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:37:25,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:37:25,328 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_c3b14d78-e29d-4898-b701-208430ea5830/sv-benchmarks/c/floats-cdfpl/newton_2_3.i[1245,1258] [2021-11-09 10:37:25,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:37:25,339 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:37:25,357 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_c3b14d78-e29d-4898-b701-208430ea5830/sv-benchmarks/c/floats-cdfpl/newton_2_3.i[1245,1258] [2021-11-09 10:37:25,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:37:25,371 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:37:25,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25 WrapperNode [2021-11-09 10:37:25,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:37:25,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:37:25,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:37:25,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:37:25,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:37:25,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:37:25,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:37:25,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:37:25,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:37:25,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:37:25,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:37:25,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:37:25,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (1/1) ... [2021-11-09 10:37:25,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:37:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:25,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:37:25,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:37:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:37:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:37:25,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:37:25,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:37:25,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:37:25,725 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-09 10:37:25,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:25 BoogieIcfgContainer [2021-11-09 10:37:25,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:37:25,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:37:25,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:37:25,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:37:25,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:37:25" (1/3) ... [2021-11-09 10:37:25,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b11db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:37:25, skipping insertion in model container [2021-11-09 10:37:25,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:25" (2/3) ... [2021-11-09 10:37:25,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b11db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:37:25, skipping insertion in model container [2021-11-09 10:37:25,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:25" (3/3) ... [2021-11-09 10:37:25,769 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_3.i [2021-11-09 10:37:25,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:37:25,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:37:25,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:37:25,846 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 10:37:25,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:37:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 10:37:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:37:25,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:25,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:37:25,879 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:37:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-11-09 10:37:25,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:25,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100795946] [2021-11-09 10:37:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:25,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:37:26,080 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 10:37:26,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:37:26,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100795946] [2021-11-09 10:37:26,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100795946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:37:26,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:37:26,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:37:26,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931552195] [2021-11-09 10:37:26,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:37:26,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:37:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:37:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:37:26,134 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:37:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:26,151 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-09 10:37:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:37:26,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-09 10:37:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:26,163 INFO L225 Difference]: With dead ends: 27 [2021-11-09 10:37:26,163 INFO L226 Difference]: Without dead ends: 11 [2021-11-09 10:37:26,167 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 10:37:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-09 10:37:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-09 10:37:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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 10:37:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-09 10:37:26,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-11-09 10:37:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:26,207 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-09 10:37:26,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:37:26,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-09 10:37:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:37:26,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:26,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:37:26,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:37:26,210 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:37:26,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-11-09 10:37:26,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:37:26,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313127508] [2021-11-09 10:37:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:26,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:37:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:37:26,270 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:37:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:37:26,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:37:26,337 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 10:37:26,339 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:37:26,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:37:26,345 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 10:37:26,348 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:37:26,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:37:26 BoogieIcfgContainer [2021-11-09 10:37:26,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:37:26,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:37:26,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:37:26,373 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:37:26,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:25" (3/4) ... [2021-11-09 10:37:26,377 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:37:26,377 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:37:26,380 INFO L168 Benchmark]: Toolchain (without parser) took 1260.63 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 49.0 MB in the beginning and 49.7 MB in the end (delta: -664.1 kB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:37:26,381 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 65.4 MB in the beginning and 65.4 MB in the end (delta: 55.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:37:26,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.68 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 48.8 MB in the beginning and 83.6 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:37:26,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.70 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:37:26,385 INFO L168 Benchmark]: Boogie Preprocessor took 25.01 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 81.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:37:26,386 INFO L168 Benchmark]: RCFGBuilder took 295.77 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 72.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:37:26,386 INFO L168 Benchmark]: TraceAbstraction took 622.95 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 50.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-09 10:37:26,387 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 109.1 MB. Free memory was 50.0 MB in the beginning and 49.7 MB in the end (delta: 316.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:37:26,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 65.4 MB in the beginning and 65.4 MB in the end (delta: 55.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.68 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 48.8 MB in the beginning and 83.6 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.70 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.01 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 81.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 295.77 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 72.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 622.95 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 50.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 109.1 MB. Free memory was 50.0 MB in the beginning and 49.7 MB in the end (delta: 316.6 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 35. 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) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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: 14 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=15occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 10:37:26,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/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_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/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_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/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_c3b14d78-e29d-4898-b701-208430ea5830/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 3e458df6584d157eca784437de0c11ff333faa57d336463992016d76ca982f53 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:37:29,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:37:29,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:37:29,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:37:29,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:37:29,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:37:29,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:37:29,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:37:29,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:37:29,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:37:29,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:37:29,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:37:29,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:37:29,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:37:29,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:37:29,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:37:29,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:37:29,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:37:29,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:37:29,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:37:29,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:37:29,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:37:29,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:37:29,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:37:29,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:37:29,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:37:29,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:37:29,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:37:29,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:37:29,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:37:29,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:37:29,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:37:29,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:37:29,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:37:29,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:37:29,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:37:29,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:37:29,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:37:29,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:37:29,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:37:29,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:37:29,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 10:37:29,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:37:29,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:37:29,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:37:29,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:37:29,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:37:29,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:37:29,501 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:37:29,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:37:29,501 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:37:29,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:37:29,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:37:29,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:37:29,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:37:29,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:37:29,503 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:37:29,503 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:37:29,503 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:37:29,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:37:29,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:37:29,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:37:29,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:37:29,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:37:29,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:37:29,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:37:29,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:37:29,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:37:29,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:37:29,509 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:37:29,510 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:37:29,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:37:29,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:37:29,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:37:29,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:37:29,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:37:29,511 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_c3b14d78-e29d-4898-b701-208430ea5830/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e458df6584d157eca784437de0c11ff333faa57d336463992016d76ca982f53 [2021-11-09 10:37:29,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:37:29,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:37:29,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:37:29,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:37:29,932 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:37:29,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-11-09 10:37:30,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/ca2d8b1f1/28ff8460c0e04e418bf9aaa975be3344/FLAG33256cf7d [2021-11-09 10:37:30,643 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:37:30,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-11-09 10:37:30,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/ca2d8b1f1/28ff8460c0e04e418bf9aaa975be3344/FLAG33256cf7d [2021-11-09 10:37:30,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/data/ca2d8b1f1/28ff8460c0e04e418bf9aaa975be3344 [2021-11-09 10:37:30,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:37:30,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:37:30,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:37:30,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:37:30,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:37:30,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:37:30" (1/1) ... [2021-11-09 10:37:30,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@747860a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:30, skipping insertion in model container [2021-11-09 10:37:30,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:37:30" (1/1) ... [2021-11-09 10:37:30,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:37:30,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:37:31,173 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_c3b14d78-e29d-4898-b701-208430ea5830/sv-benchmarks/c/floats-cdfpl/newton_2_3.i[1245,1258] [2021-11-09 10:37:31,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:37:31,192 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:37:31,217 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_c3b14d78-e29d-4898-b701-208430ea5830/sv-benchmarks/c/floats-cdfpl/newton_2_3.i[1245,1258] [2021-11-09 10:37:31,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:37:31,236 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:37:31,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31 WrapperNode [2021-11-09 10:37:31,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:37:31,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:37:31,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:37:31,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:37:31,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:37:31,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:37:31,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:37:31,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:37:31,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:37:31,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:37:31,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:37:31,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:37:31,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (1/1) ... [2021-11-09 10:37:31,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:37:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:37:31,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:37:31,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:37:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:37:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:37:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:37:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:37:43,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:37:43,113 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-09 10:37:43,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:43 BoogieIcfgContainer [2021-11-09 10:37:43,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:37:43,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:37:43,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:37:43,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:37:43,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:37:30" (1/3) ... [2021-11-09 10:37:43,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@911a1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:37:43, skipping insertion in model container [2021-11-09 10:37:43,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:37:31" (2/3) ... [2021-11-09 10:37:43,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@911a1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:37:43, skipping insertion in model container [2021-11-09 10:37:43,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:37:43" (3/3) ... [2021-11-09 10:37:43,128 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_3.i [2021-11-09 10:37:43,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:37:43,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:37:43,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:37:43,211 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 10:37:43,212 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:37:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 10:37:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:37:43,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:43,240 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:37:43,241 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:37:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-11-09 10:37:43,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:37:43,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899978754] [2021-11-09 10:37:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:43,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:37:43,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:37:43,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:37:43,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:37:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:37:46,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:37:46,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:37:46,521 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 10:37:46,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:37:46,625 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 10:37:46,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:37:46,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899978754] [2021-11-09 10:37:46,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899978754] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:37:46,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:37:46,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:37:46,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458897221] [2021-11-09 10:37:46,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:37:46,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:37:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:37:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:37:46,654 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:37:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:37:46,669 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-09 10:37:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:37:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-09 10:37:46,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:37:46,680 INFO L225 Difference]: With dead ends: 27 [2021-11-09 10:37:46,681 INFO L226 Difference]: Without dead ends: 11 [2021-11-09 10:37:46,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 10:37:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-09 10:37:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-09 10:37:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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 10:37:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-09 10:37:46,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-11-09 10:37:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:37:46,719 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-09 10:37:46,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:37:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-09 10:37:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:37:46,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:37:46,720 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:37:46,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:37:46,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:37:46,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:37:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:37:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-11-09 10:37:46,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:37:46,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414103104] [2021-11-09 10:37:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:37:46,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:37:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:37:46,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:37:46,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b14d78-e29d-4898-b701-208430ea5830/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process