./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer --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 7e8565a333fe869dbec788c18db9c78432640f29 ............................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer --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 7e8565a333fe869dbec788c18db9c78432640f29 ........................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:12:00,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:00,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:00,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:00,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:00,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:00,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:00,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:00,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:00,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:00,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:00,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:00,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:00,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:00,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:00,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:00,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:00,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:00,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:00,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:00,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:00,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:00,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:00,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:00,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:00,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:00,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:00,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:00,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:00,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:00,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:00,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:00,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:00,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:00,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:00,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:00,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:00,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:00,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:00,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:00,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:00,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:12:00,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:00,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:00,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:00,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:00,700 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:12:00,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:00,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:12:00,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:12:00,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:12:00,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:00,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:12:00,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:12:00,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:12:00,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:12:00,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:00,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:00,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:12:00,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:00,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:12:00,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:12:00,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:12:00,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:00,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:00,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:12:00,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:12:00,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:12:00,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:12:00,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:12:00,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:12:00,708 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-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e8565a333fe869dbec788c18db9c78432640f29 [2020-11-30 00:12:01,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:01,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:01,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:01,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:01,130 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:01,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2020-11-30 00:12:01,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/5464870cc/abeddbf6b55046388b823ec7e2fdcd3e/FLAG883e197ac [2020-11-30 00:12:01,788 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:01,788 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2020-11-30 00:12:01,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/5464870cc/abeddbf6b55046388b823ec7e2fdcd3e/FLAG883e197ac [2020-11-30 00:12:02,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/5464870cc/abeddbf6b55046388b823ec7e2fdcd3e [2020-11-30 00:12:02,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:02,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:02,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:02,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:02,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:02,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afdc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02, skipping insertion in model container [2020-11-30 00:12:02,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:02,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:02,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:02,436 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:02,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:02,479 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:02,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02 WrapperNode [2020-11-30 00:12:02,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:02,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:02,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:02,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:02,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:02,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:02,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:02,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:02,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... [2020-11-30 00:12:02,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:02,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:02,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:02,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:02,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:02,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:12:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:12:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:03,116 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:03,117 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 00:12:03,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:03 BoogieIcfgContainer [2020-11-30 00:12:03,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:03,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:12:03,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:12:03,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:12:03,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:12:02" (1/3) ... [2020-11-30 00:12:03,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37608062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:03, skipping insertion in model container [2020-11-30 00:12:03,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:02" (2/3) ... [2020-11-30 00:12:03,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37608062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:03, skipping insertion in model container [2020-11-30 00:12:03,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:03" (3/3) ... [2020-11-30 00:12:03,130 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_6.i [2020-11-30 00:12:03,143 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:12:03,148 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:12:03,167 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:12:03,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:12:03,212 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:12:03,213 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:12:03,213 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:12:03,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:12:03,214 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:12:03,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:12:03,214 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:12:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 00:12:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:12:03,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:03,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:03,243 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:03,251 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-11-30 00:12:03,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:03,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408234270] [2020-11-30 00:12:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:03,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408234270] [2020-11-30 00:12:03,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:03,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:12:03,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643030676] [2020-11-30 00:12:03,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:12:03,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:03,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:12:03,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:12:03,523 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-30 00:12:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:03,546 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-30 00:12:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:12:03,549 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-30 00:12:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:03,560 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:12:03,560 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 00:12:03,565 INFO L677 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 [2020-11-30 00:12:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 00:12:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 00:12:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:12:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-30 00:12:03,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-11-30 00:12:03,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:03,628 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-30 00:12:03,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:12:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-30 00:12:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:12:03,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:03,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:03,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:12:03,631 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-11-30 00:12:03,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:03,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129995364] [2020-11-30 00:12:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:03,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:03,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:03,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:03,757 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:12:03,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:12:03,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:12:03 BoogieIcfgContainer [2020-11-30 00:12:03,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:12:03,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:03,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:03,799 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:03,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:03" (3/4) ... [2020-11-30 00:12:03,803 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:12:03,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:03,808 INFO L168 Benchmark]: Toolchain (without parser) took 1671.97 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.7 MB in the beginning and 67.0 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:03,810 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:03,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.20 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 73.9 MB in the end (delta: -27.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:03,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.77 ms. Allocated memory is still 96.5 MB. Free memory was 73.9 MB in the beginning and 72.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:03,815 INFO L168 Benchmark]: Boogie Preprocessor took 24.11 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.3 MB in the end (delta: 894.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:03,816 INFO L168 Benchmark]: RCFGBuilder took 569.01 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 59.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:03,817 INFO L168 Benchmark]: TraceAbstraction took 677.04 ms. Allocated memory is still 96.5 MB. Free memory was 59.3 MB in the beginning and 67.4 MB in the end (delta: -8.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:03,818 INFO L168 Benchmark]: Witness Printer took 5.95 ms. Allocated memory is still 96.5 MB. Free memory is still 67.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:03,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 79.7 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.20 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 73.9 MB in the end (delta: -27.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.77 ms. Allocated memory is still 96.5 MB. Free memory was 73.9 MB in the beginning and 72.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.11 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.3 MB in the end (delta: 894.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 569.01 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 59.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 677.04 ms. Allocated memory is still 96.5 MB. Free memory was 59.3 MB in the beginning and 67.4 MB in the end (delta: -8.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.95 ms. Allocated memory is still 96.5 MB. Free memory is still 67.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_6.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 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=16occurred in iteration=0, 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:12:06,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:06,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:06,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:06,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:06,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:06,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:06,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:06,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:06,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:06,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:06,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:06,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:06,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:06,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:06,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:06,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:06,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:06,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:06,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:06,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:06,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:06,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:06,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:06,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:06,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:06,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:06,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:06,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:06,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:06,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:06,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:06,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:06,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:06,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:06,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:06,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:06,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:06,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:06,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:06,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:06,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:12:07,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:07,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:07,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:07,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:07,037 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:12:07,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:07,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:12:07,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:12:07,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:07,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:12:07,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:12:07,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:12:07,039 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:12:07,039 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:12:07,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:12:07,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:07,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:07,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:12:07,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:07,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:12:07,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:12:07,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:12:07,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:07,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:07,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:12:07,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:12:07,043 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:12:07,043 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:12:07,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:12:07,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:12:07,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:12:07,044 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-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e8565a333fe869dbec788c18db9c78432640f29 [2020-11-30 00:12:07,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:07,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:07,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:07,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:07,558 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:07,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2020-11-30 00:12:07,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/195276469/cdcd3bbb845549ca9fc57b20dee88349/FLAG6599b0bfb [2020-11-30 00:12:08,290 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:08,290 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2020-11-30 00:12:08,299 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/195276469/cdcd3bbb845549ca9fc57b20dee88349/FLAG6599b0bfb [2020-11-30 00:12:08,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/data/195276469/cdcd3bbb845549ca9fc57b20dee88349 [2020-11-30 00:12:08,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:08,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:08,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:08,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:08,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:08,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:08,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d537a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08, skipping insertion in model container [2020-11-30 00:12:08,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:08,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:08,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:08,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:08,927 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:08,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:08,993 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:08,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08 WrapperNode [2020-11-30 00:12:08,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:08,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:08,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:09,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:09,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:09,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:09,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:09,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:09,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... [2020-11-30 00:12:09,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:09,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:09,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:09,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:09,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:09,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:12:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:12:09,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:22,899 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:22,900 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 00:12:22,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:22 BoogieIcfgContainer [2020-11-30 00:12:22,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:22,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:12:22,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:12:22,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:12:22,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:12:08" (1/3) ... [2020-11-30 00:12:22,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f78e7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:22, skipping insertion in model container [2020-11-30 00:12:22,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:08" (2/3) ... [2020-11-30 00:12:22,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f78e7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:22, skipping insertion in model container [2020-11-30 00:12:22,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:22" (3/3) ... [2020-11-30 00:12:22,912 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_6.i [2020-11-30 00:12:22,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:12:22,931 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:12:22,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:12:23,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:12:23,017 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:12:23,017 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:12:23,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:12:23,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:12:23,018 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:12:23,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:12:23,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:12:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 00:12:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:12:23,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:23,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:23,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:23,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:23,046 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-11-30 00:12:23,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:23,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971634914] [2020-11-30 00:12:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:12:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:26,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:12:26,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:26,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:26,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971634914] [2020-11-30 00:12:26,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:26,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:12:26,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981415060] [2020-11-30 00:12:26,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:12:26,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:26,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:12:26,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:12:26,315 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-30 00:12:26,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:26,333 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-30 00:12:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:12:26,334 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-30 00:12:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:26,345 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:12:26,346 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 00:12:26,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:12:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 00:12:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 00:12:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:12:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-30 00:12:26,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-11-30 00:12:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:26,410 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-30 00:12:26,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:12:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-30 00:12:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:12:26,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:26,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:26,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:12:26,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-11-30 00:12:26,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:26,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81150707] [2020-11-30 00:12:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:26:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:26:07,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:26:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:26:53,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:26:53,652 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:26:53,653 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:26:53,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:26:53,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:26:53 BoogieIcfgContainer [2020-11-30 00:26:53,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:26:53,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:26:53,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:26:53,882 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:26:53,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:22" (3/4) ... [2020-11-30 00:26:53,884 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:26:53,933 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5683a7f5-cde4-4829-b507-e8202edadf3e/bin/uautomizer/witness.graphml [2020-11-30 00:26:53,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:26:53,935 INFO L168 Benchmark]: Toolchain (without parser) took 885274.37 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 38.4 MB in the beginning and 53.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:26:53,935 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:26:53,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.72 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 27.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:26:53,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.30 ms. Allocated memory is still 58.7 MB. Free memory was 27.5 MB in the beginning and 42.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:26:53,937 INFO L168 Benchmark]: Boogie Preprocessor took 35.54 ms. Allocated memory is still 58.7 MB. Free memory was 42.6 MB in the beginning and 41.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:26:53,938 INFO L168 Benchmark]: RCFGBuilder took 13746.78 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 28.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:26:53,938 INFO L168 Benchmark]: TraceAbstraction took 870977.18 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 28.4 MB in the beginning and 55.4 MB in the end (delta: -27.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:26:53,939 INFO L168 Benchmark]: Witness Printer took 52.15 ms. Allocated memory is still 77.6 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:26:53,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.72 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 27.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 120.30 ms. Allocated memory is still 58.7 MB. Free memory was 27.5 MB in the beginning and 42.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.54 ms. Allocated memory is still 58.7 MB. Free memory was 42.6 MB in the beginning and 41.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 13746.78 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 28.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 870977.18 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 28.4 MB in the beginning and 55.4 MB in the end (delta: -27.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 52.15 ms. Allocated memory is still 77.6 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_6.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 870.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 823.7s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...