./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf .................................................................................................................................................................................................................................................................................... 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_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf .................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-b2eff8b [2021-10-28 09:56:41,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:56:41,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:56:41,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:56:41,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:56:41,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:56:41,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:56:41,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:56:41,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:56:41,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:56:41,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:56:41,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:56:41,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:56:41,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:56:41,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:56:41,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:56:41,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:56:41,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:56:41,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:56:41,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:56:41,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:56:41,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:56:41,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:56:41,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:56:41,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:56:41,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:56:41,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:56:41,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:56:41,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:56:41,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:56:41,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:56:41,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:56:41,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:56:41,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:56:41,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:56:41,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:56:41,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:56:41,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:56:41,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:56:41,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:56:41,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:56:41,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:56:41,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:56:41,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:56:41,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:56:41,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:56:41,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:56:41,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:56:41,506 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:56:41,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:56:41,506 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:56:41,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:56:41,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:56:41,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:56:41,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:56:41,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:56:41,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:56:41,508 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:56:41,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:56:41,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:56:41,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:56:41,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:56:41,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:56:41,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:56:41,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:56:41,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:56:41,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:56:41,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:56:41,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:56:41,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:56:41,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:56:41,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:56:41,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:56:41,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:56:41,514 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_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-28 09:56:41,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:56:41,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:56:41,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:56:41,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:56:41,818 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:56:41,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 09:56:41,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/b984ce54e/9377d14fab7e425cb437603e1b4f6ebf/FLAG012d84de7 [2021-10-28 09:56:42,370 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:56:42,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 09:56:42,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/b984ce54e/9377d14fab7e425cb437603e1b4f6ebf/FLAG012d84de7 [2021-10-28 09:56:42,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/b984ce54e/9377d14fab7e425cb437603e1b4f6ebf [2021-10-28 09:56:42,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:56:42,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:56:42,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:56:42,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:56:42,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:56:42,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:42,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad11608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42, skipping insertion in model container [2021-10-28 09:56:42,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:42,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:56:42,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:56:42,936 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 09:56:42,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:56:42,961 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:56:42,976 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 09:56:42,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:56:42,991 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:56:42,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42 WrapperNode [2021-10-28 09:56:42,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:56:42,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:56:42,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:56:42,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:56:43,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:56:43,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:56:43,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:56:43,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:56:43,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:56:43,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:56:43,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:56:43,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:56:43,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (1/1) ... [2021-10-28 09:56:43,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:56:43,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:56:43,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:56:43,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:56:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:56:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:56:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:56:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:56:43,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:56:43,354 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 09:56:43,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:56:43 BoogieIcfgContainer [2021-10-28 09:56:43,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:56:43,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:56:43,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:56:43,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:56:43,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:56:42" (1/3) ... [2021-10-28 09:56:43,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ff54ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:56:43, skipping insertion in model container [2021-10-28 09:56:43,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:42" (2/3) ... [2021-10-28 09:56:43,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ff54ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:56:43, skipping insertion in model container [2021-10-28 09:56:43,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:56:43" (3/3) ... [2021-10-28 09:56:43,373 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-28 09:56:43,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:56:43,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:56:43,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:56:43,437 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:56:43,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:56:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:56:43,457 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:56:43,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:56:43,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:56:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:56:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 09:56:43,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:56:43,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914568519] [2021-10-28 09:56:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:56:43,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:56:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:56:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:56:43,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:56:43,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914568519] [2021-10-28 09:56:43,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914568519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:56:43,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:56:43,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:56:43,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655760852] [2021-10-28 09:56:43,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:56:43,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:56:43,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:56:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:56:43,728 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:56:43,745 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 09:56:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:56:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 09:56:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:56:43,756 INFO L225 Difference]: With dead ends: 19 [2021-10-28 09:56:43,756 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 09:56:43,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:56:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 09:56:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 09:56:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:43,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 09:56:43,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 09:56:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:56:43,796 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 09:56:43,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 09:56:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:56:43,797 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:56:43,797 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:56:43,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:56:43,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:56:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:56:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 09:56:43,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:56:43,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451660387] [2021-10-28 09:56:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:56:43,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:56:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:56:43,830 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:56:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:56:43,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:56:43,866 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:56:43,868 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:56:43,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:56:43,874 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:56:43,878 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:56:43,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:56:43 BoogieIcfgContainer [2021-10-28 09:56:43,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:56:43,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:56:43,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:56:43,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:56:43,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:56:43" (3/4) ... [2021-10-28 09:56:43,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:56:43,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:56:43,905 INFO L168 Benchmark]: Toolchain (without parser) took 1153.40 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 67.8 MB in the end (delta: 29.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:43,906 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 82.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:56:43,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.37 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 100.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:43,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.57 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 99.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:43,909 INFO L168 Benchmark]: Boogie Preprocessor took 20.16 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 98.3 MB in the end (delta: 970.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:56:43,910 INFO L168 Benchmark]: RCFGBuilder took 306.66 ms. Allocated memory is still 125.8 MB. Free memory was 98.0 MB in the beginning and 89.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:43,910 INFO L168 Benchmark]: TraceAbstraction took 538.75 ms. Allocated memory is still 125.8 MB. Free memory was 89.1 MB in the beginning and 68.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:56:43,911 INFO L168 Benchmark]: Witness Printer took 5.54 ms. Allocated memory is still 125.8 MB. Free memory was 68.1 MB in the beginning and 67.8 MB in the end (delta: 338.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:56:43,915 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 125.8 MB. Free memory is still 82.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.37 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 100.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.57 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 99.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.16 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 98.3 MB in the end (delta: 970.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 306.66 ms. Allocated memory is still 125.8 MB. Free memory was 98.0 MB in the beginning and 89.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 538.75 ms. Allocated memory is still 125.8 MB. Free memory was 89.1 MB in the beginning and 68.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.54 ms. Allocated memory is still 125.8 MB. Free memory was 68.1 MB in the beginning and 67.8 MB in the end (delta: 338.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: 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 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 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=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:56:43,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:56:46,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:56:46,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:56:46,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:56:46,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:56:46,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:56:46,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:56:46,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:56:46,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:56:46,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:56:46,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:56:46,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:56:46,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:56:46,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:56:46,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:56:46,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:56:46,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:56:46,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:56:46,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:56:46,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:56:46,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:56:46,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:56:46,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:56:46,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:56:46,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:56:46,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:56:46,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:56:46,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:56:46,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:56:46,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:56:46,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:56:46,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:56:46,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:56:46,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:56:46,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:56:46,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:56:46,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:56:46,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:56:46,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:56:46,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:56:46,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:56:46,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:56:46,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:56:46,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:56:46,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:56:46,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:56:46,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:56:46,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:56:46,691 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:56:46,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:56:46,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:56:46,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:56:46,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:56:46,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:56:46,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:56:46,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:56:46,695 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:56:46,695 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:56:46,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:56:46,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:56:46,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:56:46,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:56:46,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:56:46,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:56:46,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:56:46,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:56:46,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:56:46,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:56:46,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:56:46,698 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:56:46,699 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:56:46,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:56:46,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:56:46,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:56:46,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:56:46,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:56:46,700 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_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-28 09:56:47,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:56:47,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:56:47,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:56:47,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:56:47,142 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:56:47,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 09:56:47,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/2ad25c581/b1267b384bf44fc3b38784eea410013d/FLAG7ba71dd1a [2021-10-28 09:56:47,731 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:56:47,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-28 09:56:47,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/2ad25c581/b1267b384bf44fc3b38784eea410013d/FLAG7ba71dd1a [2021-10-28 09:56:48,102 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/data/2ad25c581/b1267b384bf44fc3b38784eea410013d [2021-10-28 09:56:48,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:56:48,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:56:48,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:56:48,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:56:48,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:56:48,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231afdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48, skipping insertion in model container [2021-10-28 09:56:48,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:56:48,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:56:48,298 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 09:56:48,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:56:48,316 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:56:48,369 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-28 09:56:48,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:56:48,395 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:56:48,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48 WrapperNode [2021-10-28 09:56:48,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:56:48,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:56:48,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:56:48,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:56:48,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:56:48,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:56:48,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:56:48,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:56:48,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:56:48,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:56:48,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:56:48,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:56:48,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (1/1) ... [2021-10-28 09:56:48,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:56:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:56:48,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:56:48,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:56:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:56:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:56:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:56:48,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:56:50,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:56:50,901 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 09:56:50,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:56:50 BoogieIcfgContainer [2021-10-28 09:56:50,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:56:50,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:56:50,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:56:50,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:56:50,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:56:48" (1/3) ... [2021-10-28 09:56:50,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c7127f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:56:50, skipping insertion in model container [2021-10-28 09:56:50,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:56:48" (2/3) ... [2021-10-28 09:56:50,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c7127f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:56:50, skipping insertion in model container [2021-10-28 09:56:50,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:56:50" (3/3) ... [2021-10-28 09:56:50,913 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-28 09:56:50,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:56:50,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:56:50,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:56:50,982 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:56:50,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:56:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:56:50,998 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:56:50,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:56:50,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:56:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:56:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-28 09:56:51,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:56:51,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025297217] [2021-10-28 09:56:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:56:51,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:56:51,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:56:51,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:56:51,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:56:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:56:51,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:56:51,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:56:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:56:51,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:56:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:56:51,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:56:51,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025297217] [2021-10-28 09:56:51,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025297217] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:56:51,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:56:51,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:56:51,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468179172] [2021-10-28 09:56:51,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:56:51,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:56:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:56:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:56:51,971 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:51,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:56:51,985 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 09:56:51,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:56:51,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 09:56:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:56:51,994 INFO L225 Difference]: With dead ends: 19 [2021-10-28 09:56:51,995 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 09:56:51,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:56:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 09:56:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 09:56:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 09:56:52,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 09:56:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:56:52,028 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 09:56:52,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:56:52,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 09:56:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:56:52,029 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:56:52,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:56:52,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:56:52,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:56:52,244 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:56:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:56:52,245 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-28 09:56:52,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:56:52,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136526734] [2021-10-28 09:56:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:56:52,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:56:52,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:56:52,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:56:52,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:59:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:59:27,381 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 10:01:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 10:01:06,680 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 10:01:06,680 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 10:01:06,683 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 10:01:06,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 10:01:06,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 10:01:06,894 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 10:01:06,898 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 10:01:06,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:01:06 BoogieIcfgContainer [2021-10-28 10:01:06,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 10:01:06,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 10:01:06,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 10:01:06,938 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 10:01:06,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:56:50" (3/4) ... [2021-10-28 10:01:06,941 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 10:01:07,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 10:01:07,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 10:01:07,024 INFO L168 Benchmark]: Toolchain (without parser) took 258913.39 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.7 MB in the beginning and 41.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-28 10:01:07,025 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:01:07,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.85 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.5 MB in the beginning and 60.6 MB in the end (delta: -29.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-28 10:01:07,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.25 ms. Allocated memory is still 77.6 MB. Free memory was 60.4 MB in the beginning and 59.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 10:01:07,032 INFO L168 Benchmark]: Boogie Preprocessor took 25.83 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 57.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 10:01:07,032 INFO L168 Benchmark]: RCFGBuilder took 2443.58 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 48.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 10:01:07,033 INFO L168 Benchmark]: TraceAbstraction took 256028.17 ms. Allocated memory is still 77.6 MB. Free memory was 48.3 MB in the beginning and 43.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-28 10:01:07,034 INFO L168 Benchmark]: Witness Printer took 81.18 ms. Allocated memory is still 77.6 MB. Free memory was 43.3 MB in the beginning and 41.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 10:01:07,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.85 ms. Allocated memory was 54.5 MB in the beginning and 77.6 MB in the end (delta: 23.1 MB). Free memory was 31.5 MB in the beginning and 60.6 MB in the end (delta: -29.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.25 ms. Allocated memory is still 77.6 MB. Free memory was 60.4 MB in the beginning and 59.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.83 ms. Allocated memory is still 77.6 MB. Free memory was 59.0 MB in the beginning and 57.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2443.58 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 48.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 256028.17 ms. Allocated memory is still 77.6 MB. Free memory was 48.3 MB in the beginning and 43.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 81.18 ms. Allocated memory is still 77.6 MB. Free memory was 43.3 MB in the beginning and 41.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 255.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 155.8s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 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! [2021-10-28 10:01:07,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6706be0e-8597-4373-aba9-8785ea6286f5/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...