./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_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_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ............................................................................................................................................................................................................................................................................ 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_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ........................................................................................................................................................................................................................................................................................ 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 [2020-11-29 20:24:31,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:24:31,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:24:31,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:24:31,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:24:31,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:24:31,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:24:31,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:24:31,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:24:31,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:24:31,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:24:31,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:24:31,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:24:31,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:24:31,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:24:31,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:24:31,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:24:31,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:24:31,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:24:31,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:24:31,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:24:31,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:24:31,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:24:31,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:24:31,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:24:31,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:24:31,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:24:31,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:24:31,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:24:31,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:24:31,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:24:31,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:24:31,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:24:31,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:24:31,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:24:31,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:24:31,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:24:31,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:24:31,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:24:31,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:24:31,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:24:31,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:24:32,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:24:32,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:24:32,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:24:32,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:24:32,015 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:24:32,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:24:32,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:24:32,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:24:32,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:24:32,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:24:32,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:24:32,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:24:32,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:24:32,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:24:32,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:24:32,019 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:24:32,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:24:32,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:24:32,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:24:32,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:24:32,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:24:32,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:24:32,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:24:32,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:24:32,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:24:32,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:24:32,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:24:32,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:24:32,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:24:32,023 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_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-11-29 20:24:32,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:24:32,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:24:32,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:24:32,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:24:32,409 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:24:32,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-11-29 20:24:32,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/12a1dec9c/80c430b56ebd4ef0ba7f221176e6a99b/FLAG0793a1c7b [2020-11-29 20:24:33,079 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:24:33,082 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-11-29 20:24:33,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/12a1dec9c/80c430b56ebd4ef0ba7f221176e6a99b/FLAG0793a1c7b [2020-11-29 20:24:33,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/12a1dec9c/80c430b56ebd4ef0ba7f221176e6a99b [2020-11-29 20:24:33,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:24:33,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:24:33,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:24:33,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:24:33,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:24:33,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22dbaf01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33, skipping insertion in model container [2020-11-29 20:24:33,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:24:33,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:24:33,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:24:33,729 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:24:33,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:24:33,772 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:24:33,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33 WrapperNode [2020-11-29 20:24:33,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:24:33,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:24:33,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:24:33,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:24:33,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:24:33,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:24:33,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:24:33,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:24:33,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... [2020-11-29 20:24:33,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:24:33,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:24:33,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:24:33,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:24:33,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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 [2020-11-29 20:24:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:24:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:24:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:24:33,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:24:34,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:24:34,284 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 20:24:34,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:34 BoogieIcfgContainer [2020-11-29 20:24:34,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:24:34,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:24:34,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:24:34,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:24:34,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:24:33" (1/3) ... [2020-11-29 20:24:34,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c56547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:24:34, skipping insertion in model container [2020-11-29 20:24:34,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:33" (2/3) ... [2020-11-29 20:24:34,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c56547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:24:34, skipping insertion in model container [2020-11-29 20:24:34,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:34" (3/3) ... [2020-11-29 20:24:34,320 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-11-29 20:24:34,335 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:24:34,338 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:24:34,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:24:34,381 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:24:34,382 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:24:34,382 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:24:34,382 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:24:34,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:24:34,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:24:34,383 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:24:34,383 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:24:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 20:24:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:24:34,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:34,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:34,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-29 20:24:34,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:24:34,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279987323] [2020-11-29 20:24:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:24:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:24:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:24:34,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279987323] [2020-11-29 20:24:34,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:24:34,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:24:34,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045097253] [2020-11-29 20:24:34,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:24:34,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:24:34,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:24:34,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:24:34,605 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-29 20:24:34,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:24:34,625 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-29 20:24:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:24:34,627 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 20:24:34,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:24:34,637 INFO L225 Difference]: With dead ends: 25 [2020-11-29 20:24:34,637 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 20:24:34,641 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 [2020-11-29 20:24:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 20:24:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:24:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:24:34,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-29 20:24:34,681 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-29 20:24:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:24:34,681 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-29 20:24:34,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:24:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-29 20:24:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:24:34,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:34,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:34,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:24:34,684 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:34,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:34,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-29 20:24:34,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:24:34,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374430216] [2020-11-29 20:24:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:24:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:24:34,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:24:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:24:34,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:24:34,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:24:34,760 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:24:34,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:24:34,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:24:34 BoogieIcfgContainer [2020-11-29 20:24:34,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:24:34,790 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:24:34,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:24:34,791 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:24:34,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:34" (3/4) ... [2020-11-29 20:24:34,796 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:24:34,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:24:34,800 INFO L168 Benchmark]: Toolchain (without parser) took 1379.19 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 56.3 MB in the beginning and 54.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:34,801 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:24:34,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.13 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 56.1 MB in the beginning and 87.6 MB in the end (delta: -31.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:34,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.45 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 86.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:34,809 INFO L168 Benchmark]: Boogie Preprocessor took 26.23 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 85.4 MB in the end (delta: 856.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:24:34,810 INFO L168 Benchmark]: RCFGBuilder took 439.54 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 74.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:34,811 INFO L168 Benchmark]: TraceAbstraction took 487.43 ms. Allocated memory is still 111.1 MB. Free memory was 73.6 MB in the beginning and 54.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:34,812 INFO L168 Benchmark]: Witness Printer took 5.74 ms. Allocated memory is still 111.1 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:24:34,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.13 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 56.1 MB in the beginning and 87.6 MB in the end (delta: -31.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.45 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 86.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.23 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 85.4 MB in the end (delta: 856.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 439.54 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 74.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 487.43 ms. Allocated memory is still 111.1 MB. Free memory was 73.6 MB in the beginning and 54.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.74 ms. Allocated memory is still 111.1 MB. Free memory is still 54.1 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 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_6.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 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=14occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 [2020-11-29 20:24:37,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:24:37,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:24:37,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:24:37,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:24:37,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:24:37,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:24:37,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:24:37,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:24:37,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:24:37,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:24:38,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:24:38,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:24:38,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:24:38,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:24:38,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:24:38,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:24:38,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:24:38,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:24:38,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:24:38,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:24:38,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:24:38,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:24:38,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:24:38,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:24:38,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:24:38,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:24:38,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:24:38,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:24:38,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:24:38,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:24:38,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:24:38,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:24:38,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:24:38,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:24:38,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:24:38,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:24:38,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:24:38,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:24:38,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:24:38,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:24:38,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:24:38,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:24:38,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:24:38,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:24:38,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:24:38,137 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:24:38,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:24:38,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:24:38,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:24:38,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:24:38,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:24:38,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:24:38,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:24:38,141 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:24:38,141 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:24:38,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:24:38,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:24:38,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:24:38,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:24:38,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:24:38,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:24:38,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:24:38,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:24:38,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:24:38,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:24:38,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:24:38,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:24:38,145 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:24:38,145 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:24:38,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:24:38,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:24:38,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:24:38,146 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_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-11-29 20:24:38,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:24:38,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:24:38,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:24:38,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:24:38,725 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:24:38,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-11-29 20:24:38,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/9b4eb2d1f/aa714c52a97c4b7fb3ea44f72ab50802/FLAG3658b2321 [2020-11-29 20:24:39,441 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:24:39,441 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-11-29 20:24:39,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/9b4eb2d1f/aa714c52a97c4b7fb3ea44f72ab50802/FLAG3658b2321 [2020-11-29 20:24:39,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/data/9b4eb2d1f/aa714c52a97c4b7fb3ea44f72ab50802 [2020-11-29 20:24:39,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:24:39,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:24:39,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:24:39,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:24:39,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:24:39,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:24:39" (1/1) ... [2020-11-29 20:24:39,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb57074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:39, skipping insertion in model container [2020-11-29 20:24:39,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:24:39" (1/1) ... [2020-11-29 20:24:39,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:24:39,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:24:40,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:24:40,032 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:24:40,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:24:40,079 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:24:40,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40 WrapperNode [2020-11-29 20:24:40,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:24:40,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:24:40,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:24:40,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:24:40,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:24:40,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:24:40,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:24:40,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:24:40,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... [2020-11-29 20:24:40,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:24:40,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:24:40,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:24:40,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:24:40,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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 [2020-11-29 20:24:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:24:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:24:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:24:40,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:24:48,295 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:24:48,296 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 20:24:48,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:48 BoogieIcfgContainer [2020-11-29 20:24:48,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:24:48,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:24:48,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:24:48,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:24:48,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:24:39" (1/3) ... [2020-11-29 20:24:48,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aac7e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:24:48, skipping insertion in model container [2020-11-29 20:24:48,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:40" (2/3) ... [2020-11-29 20:24:48,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aac7e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:24:48, skipping insertion in model container [2020-11-29 20:24:48,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:48" (3/3) ... [2020-11-29 20:24:48,354 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-11-29 20:24:48,387 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:24:48,401 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:24:48,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:24:48,499 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:24:48,500 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:24:48,500 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:24:48,500 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:24:48,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:24:48,501 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:24:48,501 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:24:48,501 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:24:48,517 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 20:24:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:24:48,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:48,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:48,525 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:48,533 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-29 20:24:48,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:24:48,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92930059] [2020-11-29 20:24:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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 [2020-11-29 20:24:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:24:50,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:24:50,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:24:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:24:50,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:24:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:24:50,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92930059] [2020-11-29 20:24:50,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:24:50,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:24:50,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516674942] [2020-11-29 20:24:50,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:24:50,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:24:50,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:24:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:24:50,252 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-29 20:24:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:24:50,271 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-29 20:24:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:24:50,272 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 20:24:50,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:24:50,282 INFO L225 Difference]: With dead ends: 25 [2020-11-29 20:24:50,282 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 20:24:50,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:24:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 20:24:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:24:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:24:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-29 20:24:50,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-29 20:24:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:24:50,324 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-29 20:24:50,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:24:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-29 20:24:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:24:50,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:50,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:50,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:24:50,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-29 20:24:50,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:24:50,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118316592] [2020-11-29 20:24:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/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 [2020-11-29 20:24:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:24:58,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:25:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:25:54,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:25:54,357 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:25:54,357 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:25:54,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:25:54,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:25:54 BoogieIcfgContainer [2020-11-29 20:25:54,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:25:54,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:25:54,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:25:54,598 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:25:54,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:48" (3/4) ... [2020-11-29 20:25:54,601 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:25:54,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_da4aad99-d9e8-4c22-a3a1-85989be9f6b1/bin/uautomizer/witness.graphml [2020-11-29 20:25:54,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:25:54,656 INFO L168 Benchmark]: Toolchain (without parser) took 74880.38 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.8 MB in the beginning and 41.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:54,658 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:25:54,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.58 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 22.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:54,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.52 ms. Allocated memory is still 54.5 MB. Free memory was 22.0 MB in the beginning and 37.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:54,665 INFO L168 Benchmark]: Boogie Preprocessor took 51.24 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:54,666 INFO L168 Benchmark]: RCFGBuilder took 8115.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 24.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:54,667 INFO L168 Benchmark]: TraceAbstraction took 66288.94 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.3 MB in the beginning and 43.8 MB in the end (delta: -19.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:25:54,668 INFO L168 Benchmark]: Witness Printer took 56.61 ms. Allocated memory is still 67.1 MB. Free memory was 43.8 MB in the beginning and 41.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:54,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 54.5 MB. Free memory is still 36.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.58 ms. Allocated memory is still 54.5 MB. Free memory was 32.6 MB in the beginning and 22.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.52 ms. Allocated memory is still 54.5 MB. Free memory was 22.0 MB in the beginning and 37.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.24 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8115.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 24.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 66288.94 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.3 MB in the beginning and 43.8 MB in the end (delta: -19.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.61 ms. Allocated memory is still 67.1 MB. Free memory was 43.8 MB in the beginning and 41.8 MB in the end (delta: 2.0 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); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_6.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 66.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 9.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 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...