./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.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_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/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 90741c14eee92622488e9390ec37eb8bb78b90b3 ............................................................................................................................................................................................................................................................................ 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_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/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 90741c14eee92622488e9390ec37eb8bb78b90b3 ........................................................................................................................................................................................................................................................................................ 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 00:11:10,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:10,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:10,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:10,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:10,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:10,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:10,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:10,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:10,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:10,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:10,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:10,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:10,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:10,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:10,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:10,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:10,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:10,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:10,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:10,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:10,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:10,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:10,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:10,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:10,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:10,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:10,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:10,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:10,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:10,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:10,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:10,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:10,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:10,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:10,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:10,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:10,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:10,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:10,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:10,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:10,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:11:10,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:10,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:10,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:10,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:10,540 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:10,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:10,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:10,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:11:10,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:10,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:10,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:10,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:10,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:10,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:10,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:10,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:10,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:10,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:10,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:10,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:10,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:10,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:10,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:10,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:10,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:10,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:11:10,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:11:10,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:10,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:10,549 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_0ec2c86b-eb54-434c-988b-9719b8c00e75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2020-11-30 00:11:10,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:10,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:10,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:10,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:10,921 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:10,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-11-30 00:11:11,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/c694a694c/240725d2de5b458a9080e894d7fc39f0/FLAG265388ec3 [2020-11-30 00:11:11,687 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:11,688 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-11-30 00:11:11,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/c694a694c/240725d2de5b458a9080e894d7fc39f0/FLAG265388ec3 [2020-11-30 00:11:12,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/c694a694c/240725d2de5b458a9080e894d7fc39f0 [2020-11-30 00:11:12,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:12,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:12,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:12,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:12,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:12,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1ec510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12, skipping insertion in model container [2020-11-30 00:11:12,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:12,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:12,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:12,381 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:12,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:12,445 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:12,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12 WrapperNode [2020-11-30 00:11:12,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:12,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:12,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:12,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:12,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:12,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:12,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:12,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:12,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... [2020-11-30 00:11:12,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:12,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:12,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:12,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:12,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/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 00:11:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:11:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:12,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:13,037 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:13,046 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:11:13,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:13 BoogieIcfgContainer [2020-11-30 00:11:13,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:13,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:13,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:13,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:13,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:12" (1/3) ... [2020-11-30 00:11:13,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ca662a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:13, skipping insertion in model container [2020-11-30 00:11:13,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:12" (2/3) ... [2020-11-30 00:11:13,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ca662a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:13, skipping insertion in model container [2020-11-30 00:11:13,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:13" (3/3) ... [2020-11-30 00:11:13,069 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2020-11-30 00:11:13,082 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:13,086 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:13,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:13,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:13,136 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:13,137 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:13,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:13,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:13,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:13,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:13,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 00:11:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:11:13,160 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:13,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:13,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:13,169 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-30 00:11:13,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:13,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936666532] [2020-11-30 00:11:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:13,393 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 00:11:13,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936666532] [2020-11-30 00:11:13,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:13,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:11:13,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576413637] [2020-11-30 00:11:13,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:13,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:11:13,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:13,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:13,426 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-30 00:11:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:13,444 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-30 00:11:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:13,446 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 00:11:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:13,456 INFO L225 Difference]: With dead ends: 25 [2020-11-30 00:11:13,456 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 00:11:13,460 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 00:11:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 00:11:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 00:11:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:11:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-30 00:11:13,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-30 00:11:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:13,510 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-30 00:11:13,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-30 00:11:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:11:13,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:13,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:13,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:11:13,511 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-30 00:11:13,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:11:13,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630190003] [2020-11-30 00:11:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:11:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:13,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:11:13,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:11:13,667 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:11:13,667 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:11:13,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:11:13,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:11:13 BoogieIcfgContainer [2020-11-30 00:11:13,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:11:13,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:11:13,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:11:13,696 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:11:13,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:13" (3/4) ... [2020-11-30 00:11:13,700 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:11:13,700 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:11:13,702 INFO L168 Benchmark]: Toolchain (without parser) took 1663.92 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 71.4 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,703 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 73.4 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.96 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 73.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 72.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,706 INFO L168 Benchmark]: Boogie Preprocessor took 54.00 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.9 MB in the end (delta: 793.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,707 INFO L168 Benchmark]: RCFGBuilder took 504.16 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 60.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:11:13,708 INFO L168 Benchmark]: TraceAbstraction took 633.57 ms. Allocated memory is still 96.5 MB. Free memory was 59.6 MB in the beginning and 72.0 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,709 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 71.4 MB in the end (delta: 565.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:11:13,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 73.4 MB. Free memory was 36.0 MB in the beginning and 35.9 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.96 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 73.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.45 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 72.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.00 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.9 MB in the end (delta: 793.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 504.16 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 60.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 633.57 ms. Allocated memory is still 96.5 MB. Free memory was 59.6 MB in the beginning and 72.0 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.59 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 71.4 MB in the end (delta: 565.8 kB). 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_4.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: 0.5s, 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 [2020-11-30 00:11:16,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:11:16,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:11:16,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:11:16,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:11:16,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:11:16,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:11:16,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:11:16,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:11:16,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:11:16,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:11:16,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:11:16,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:11:16,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:11:16,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:11:16,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:11:16,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:11:16,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:11:16,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:11:16,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:11:16,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:11:16,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:11:16,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:11:16,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:11:16,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:11:16,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:11:16,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:11:16,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:11:16,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:11:16,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:11:16,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:11:16,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:11:16,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:11:16,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:11:16,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:11:16,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:11:16,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:11:16,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:11:16,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:11:16,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:11:16,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:11:16,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:11:16,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:11:16,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:11:16,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:11:16,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:11:16,451 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:11:16,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:11:16,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:11:16,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:11:16,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:11:16,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:11:16,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:11:16,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:11:16,453 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:11:16,454 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:11:16,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:11:16,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:11:16,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:11:16,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:11:16,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:11:16,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:11:16,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:11:16,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:11:16,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:11:16,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:11:16,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:11:16,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:11:16,456 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:11:16,456 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:11:16,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:11:16,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:11:16,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:11:16,457 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_0ec2c86b-eb54-434c-988b-9719b8c00e75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2020-11-30 00:11:16,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:11:16,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:11:16,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:11:16,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:11:16,950 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:11:16,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-11-30 00:11:17,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/daa3b6053/1e30464b150440a18920812a5896e45f/FLAG0fe498581 [2020-11-30 00:11:17,681 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:11:17,681 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-11-30 00:11:17,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/daa3b6053/1e30464b150440a18920812a5896e45f/FLAG0fe498581 [2020-11-30 00:11:18,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/data/daa3b6053/1e30464b150440a18920812a5896e45f [2020-11-30 00:11:18,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:11:18,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:11:18,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:18,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:11:18,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:11:18,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb3014e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18, skipping insertion in model container [2020-11-30 00:11:18,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:11:18,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:11:18,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:18,274 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:11:18,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:11:18,327 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:11:18,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18 WrapperNode [2020-11-30 00:11:18,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:11:18,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:18,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:11:18,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:11:18,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:11:18,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:11:18,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:11:18,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:11:18,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... [2020-11-30 00:11:18,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:11:18,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:11:18,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:11:18,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:11:18,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/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 00:11:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:11:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:11:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:11:18,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:11:25,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:11:25,185 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:11:25,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:25 BoogieIcfgContainer [2020-11-30 00:11:25,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:11:25,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:11:25,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:11:25,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:11:25,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:11:18" (1/3) ... [2020-11-30 00:11:25,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2574f6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:25, skipping insertion in model container [2020-11-30 00:11:25,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:11:18" (2/3) ... [2020-11-30 00:11:25,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2574f6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:11:25, skipping insertion in model container [2020-11-30 00:11:25,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:25" (3/3) ... [2020-11-30 00:11:25,210 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2020-11-30 00:11:25,242 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:11:25,246 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:11:25,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:11:25,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:11:25,281 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:11:25,281 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:11:25,281 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:11:25,281 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:11:25,282 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:11:25,282 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:11:25,282 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:11:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 00:11:25,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:11:25,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:25,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:25,309 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:25,320 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-30 00:11:25,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:25,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869292498] [2020-11-30 00:11:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/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 00:11:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:11:26,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:11:26,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:11:26,826 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 00:11:26,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:11:26,831 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 00:11:26,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869292498] [2020-11-30 00:11:26,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:11:26,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:11:26,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016501132] [2020-11-30 00:11:26,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:11:26,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:11:26,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:11:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:11:26,859 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-30 00:11:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:11:26,874 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-30 00:11:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:11:26,876 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 00:11:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:11:26,886 INFO L225 Difference]: With dead ends: 25 [2020-11-30 00:11:26,886 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 00:11:26,889 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 [2020-11-30 00:11:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 00:11:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 00:11:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:11:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-30 00:11:26,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-30 00:11:26,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:11:26,926 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-30 00:11:26,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:11:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-30 00:11:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:11:26,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:11:26,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:11:27,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:11:27,144 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:11:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:11:27,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-30 00:11:27,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:11:27,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927256936] [2020-11-30 00:11:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/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 00:14:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:19,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:24,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:24,234 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:14:24,234 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:14:24,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:14:24,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:24 BoogieIcfgContainer [2020-11-30 00:14:24,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:24,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:24,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:24,465 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:24,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:11:25" (3/4) ... [2020-11-30 00:14:24,468 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:14:24,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0ec2c86b-eb54-434c-988b-9719b8c00e75/bin/uautomizer/witness.graphml [2020-11-30 00:14:24,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:24,515 INFO L168 Benchmark]: Toolchain (without parser) took 186455.72 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.8 MB in the beginning and 43.6 MB in the end (delta: -14.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:24,516 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 22.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:24,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.06 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 35.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:24,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.03 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 35.0 MB in the beginning and 49.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:24,519 INFO L168 Benchmark]: Boogie Preprocessor took 50.22 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:24,520 INFO L168 Benchmark]: RCFGBuilder took 6737.85 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 37.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:24,521 INFO L168 Benchmark]: TraceAbstraction took 179259.61 ms. Allocated memory is still 67.1 MB. Free memory was 36.6 MB in the beginning and 45.7 MB in the end (delta: -9.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:24,521 INFO L168 Benchmark]: Witness Printer took 48.36 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 43.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:24,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 22.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.06 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 35.0 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.03 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 35.0 MB in the beginning and 49.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.22 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6737.85 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 37.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 179259.61 ms. Allocated memory is still 67.1 MB. Free memory was 36.6 MB in the beginning and 45.7 MB in the end (delta: -9.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 48.36 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 43.6 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_4.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: 179.1s, 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, 173.8s 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...