./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC --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_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC --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 0.2.0-7b2dab5 [2021-10-11 00:23:30,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:30,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:30,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:30,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:30,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:30,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:30,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:30,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:30,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:30,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:30,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:30,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:30,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:30,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:30,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:30,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:30,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:30,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:30,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:30,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:30,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:30,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:30,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:30,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:30,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:30,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:30,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:30,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:30,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:30,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:30,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:30,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:30,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:30,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:30,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:30,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:30,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:30,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:30,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:30,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:30,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:23:30,471 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:30,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:30,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:30,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:30,474 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:30,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:30,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:23:30,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:23:30,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:23:30,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:30,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:23:30,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:23:30,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:23:30,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:23:30,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:30,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:30,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:23:30,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:30,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:30,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:23:30,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:30,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:30,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:23:30,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:23:30,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:23:30,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:23:30,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:23:30,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:30,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2021-10-11 00:23:30,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:30,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:30,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:30,868 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:30,869 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:30,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-11 00:23:30,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/89f1639e2/bc71850d12664d8db7514c6871d15d3f/FLAG1518524f0 [2021-10-11 00:23:31,418 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:31,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-11 00:23:31,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/89f1639e2/bc71850d12664d8db7514c6871d15d3f/FLAG1518524f0 [2021-10-11 00:23:31,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/89f1639e2/bc71850d12664d8db7514c6871d15d3f [2021-10-11 00:23:31,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:31,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:31,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:31,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:31,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:31,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:31" (1/1) ... [2021-10-11 00:23:31,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e8fe85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:31, skipping insertion in model container [2021-10-11 00:23:31,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:31" (1/1) ... [2021-10-11 00:23:31,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:31,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:32,088 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-11 00:23:32,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:32,100 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:32,120 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-11 00:23:32,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:32,135 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:32,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32 WrapperNode [2021-10-11 00:23:32,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:32,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:32,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:32,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:32,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:32,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:32,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:32,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:32,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... [2021-10-11 00:23:32,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:32,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:32,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:32,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:32,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:23:32,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:23:32,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:32,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:32,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:32,556 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 00:23:32,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:32 BoogieIcfgContainer [2021-10-11 00:23:32,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:32,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:23:32,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:23:32,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:23:32,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:23:31" (1/3) ... [2021-10-11 00:23:32,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23edabfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:32, skipping insertion in model container [2021-10-11 00:23:32,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:32" (2/3) ... [2021-10-11 00:23:32,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23edabfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:32, skipping insertion in model container [2021-10-11 00:23:32,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:32" (3/3) ... [2021-10-11 00:23:32,570 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-11 00:23:32,586 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:23:32,589 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:23:32,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:23:32,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:23:32,629 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:23:32,629 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:23:32,629 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:32,630 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:32,630 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:23:32,630 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:32,630 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:23:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 00:23:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:23:32,650 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:32,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:32,651 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:32,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:32,657 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-11 00:23:32,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:32,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804820958] [2021-10-11 00:23:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:32,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804820958] [2021-10-11 00:23:32,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:32,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:32,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51193907] [2021-10-11 00:23:32,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:23:32,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:32,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:23:32,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:23:32,844 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2021-10-11 00:23:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:32,863 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-11 00:23:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:23:32,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 00:23:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:32,878 INFO L225 Difference]: With dead ends: 23 [2021-10-11 00:23:32,879 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 00:23:32,883 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 [2021-10-11 00:23:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 00:23:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:23:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:23:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-11 00:23:32,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-11 00:23:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:32,925 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-11 00:23:32,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:23:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-11 00:23:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:23:32,927 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:32,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:32,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:23:32,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:32,932 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-11 00:23:32,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:32,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10150961] [2021-10-11 00:23:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:32,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:33,014 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:33,035 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:33,035 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:23:33,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:23:33,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:33 BoogieIcfgContainer [2021-10-11 00:23:33,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:23:33,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:33,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:33,059 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:33,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:32" (3/4) ... [2021-10-11 00:23:33,063 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:23:33,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:33,065 INFO L168 Benchmark]: Toolchain (without parser) took 1267.52 ms. Allocated memory is still 102.8 MB. Free memory was 64.0 MB in the beginning and 43.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:33,065 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 80.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:33,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.73 ms. Allocated memory is still 102.8 MB. Free memory was 63.8 MB in the beginning and 77.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:33,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.83 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:33,067 INFO L168 Benchmark]: Boogie Preprocessor took 19.37 ms. Allocated memory is still 102.8 MB. Free memory was 75.5 MB in the beginning and 74.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:33,068 INFO L168 Benchmark]: RCFGBuilder took 363.11 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 63.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:33,069 INFO L168 Benchmark]: TraceAbstraction took 497.74 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 43.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:33,069 INFO L168 Benchmark]: Witness Printer took 4.30 ms. Allocated memory is still 102.8 MB. Free memory was 43.9 MB in the beginning and 43.6 MB in the end (delta: 301.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:33,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 80.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.73 ms. Allocated memory is still 102.8 MB. Free memory was 63.8 MB in the beginning and 77.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.83 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.37 ms. Allocated memory is still 102.8 MB. Free memory was 75.5 MB in the beginning and 74.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 363.11 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 63.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 497.74 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 43.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.30 ms. Allocated memory is still 102.8 MB. Free memory was 43.9 MB in the beginning and 43.6 MB in the end (delta: 301.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 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) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 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=13occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 0.2.0-7b2dab5 [2021-10-11 00:23:35,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:35,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:35,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:35,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:35,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:35,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:35,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:35,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:35,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:35,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:35,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:35,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:35,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:35,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:35,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:35,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:35,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:35,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:35,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:35,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:35,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:35,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:35,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:35,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:35,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:35,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:35,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:35,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:35,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:35,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:35,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:35,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:35,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:35,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:35,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:35,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:35,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:35,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:35,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:35,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:35,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-11 00:23:36,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:36,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:36,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:36,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:36,049 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:36,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:36,050 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:23:36,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:23:36,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:36,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:23:36,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:23:36,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:23:36,052 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 00:23:36,053 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 00:23:36,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:23:36,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:36,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:36,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:23:36,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:36,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:36,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:23:36,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:36,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:36,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:23:36,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:23:36,056 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-11 00:23:36,056 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 00:23:36,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:23:36,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:36,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 00:23:36,057 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2021-10-11 00:23:36,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:36,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:36,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:36,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:36,493 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:36,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-11 00:23:36,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/a4a937db0/6fa43a4b68d6424f8e4cd0e2699648a2/FLAG60145484d [2021-10-11 00:23:37,183 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:37,184 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-11 00:23:37,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/a4a937db0/6fa43a4b68d6424f8e4cd0e2699648a2/FLAG60145484d [2021-10-11 00:23:37,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/data/a4a937db0/6fa43a4b68d6424f8e4cd0e2699648a2 [2021-10-11 00:23:37,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:37,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:37,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:37,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:37,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:37,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6b896a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37, skipping insertion in model container [2021-10-11 00:23:37,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:37,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:37,722 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-11 00:23:37,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:37,739 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:37,761 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-11 00:23:37,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:37,800 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:37,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37 WrapperNode [2021-10-11 00:23:37,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:37,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:37,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:37,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:37,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:37,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:37,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:37,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:37,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... [2021-10-11 00:23:37,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:37,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:37,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:37,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:37,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 00:23:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:23:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:44,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:44,031 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 00:23:44,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:44 BoogieIcfgContainer [2021-10-11 00:23:44,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:44,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:23:44,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:23:44,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:23:44,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:23:37" (1/3) ... [2021-10-11 00:23:44,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa6c485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:44, skipping insertion in model container [2021-10-11 00:23:44,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:37" (2/3) ... [2021-10-11 00:23:44,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa6c485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:44, skipping insertion in model container [2021-10-11 00:23:44,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:44" (3/3) ... [2021-10-11 00:23:44,060 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-11 00:23:44,077 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:23:44,081 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:23:44,093 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:23:44,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:23:44,130 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:23:44,131 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:23:44,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:44,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:44,131 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:23:44,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:44,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:23:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 00:23:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:23:44,151 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:44,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:44,152 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:44,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:44,159 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-11 00:23:44,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:23:44,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478785949] [2021-10-11 00:23:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:45,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 00:23:45,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:45,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:23:45,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478785949] [2021-10-11 00:23:45,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:45,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:45,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49276801] [2021-10-11 00:23:45,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:23:45,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:23:45,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:23:45,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:23:45,538 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2021-10-11 00:23:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:45,551 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-11 00:23:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:23:45,552 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 00:23:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:45,561 INFO L225 Difference]: With dead ends: 23 [2021-10-11 00:23:45,561 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 00:23:45,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:23:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 00:23:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:23:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:23:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-11 00:23:45,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-11 00:23:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:45,597 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-11 00:23:45,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:23:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-11 00:23:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:23:45,598 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:45,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:45,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 00:23:45,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-11 00:23:45,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:23:45,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595433726] [2021-10-11 00:23:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:23:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:58,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:24:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:24:06,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:24:06,619 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-11 00:24:06,620 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:24:06,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 00:24:06,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:24:06 BoogieIcfgContainer [2021-10-11 00:24:06,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:24:06,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:24:06,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:24:06,849 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:24:06,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:44" (3/4) ... [2021-10-11 00:24:06,852 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:24:06,906 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0efa862-bc0c-47e3-b8b4-1c16bd6069a1/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:24:06,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:24:06,914 INFO L168 Benchmark]: Toolchain (without parser) took 29370.02 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 39.9 MB in the beginning and 53.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,915 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:06,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.91 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 43.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.99 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 41.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,920 INFO L168 Benchmark]: Boogie Preprocessor took 52.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:06,924 INFO L168 Benchmark]: RCFGBuilder took 6118.35 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 28.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,925 INFO L168 Benchmark]: TraceAbstraction took 22798.95 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 32.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,927 INFO L168 Benchmark]: Witness Printer took 61.87 ms. Allocated memory is still 71.3 MB. Free memory was 32.9 MB in the beginning and 53.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.91 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 43.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.99 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 41.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6118.35 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 28.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22798.95 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 32.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Witness Printer took 61.87 ms. Allocated memory is still 71.3 MB. Free memory was 32.9 MB in the beginning and 53.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_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) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 14.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 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 proved your program to be incorrect! Received shutdown request...