./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:51:00,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:51:00,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:51:00,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:51:00,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:51:00,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:51:00,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:51:00,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:51:00,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:51:00,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:51:00,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:51:00,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:51:00,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:51:00,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:51:00,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:51:00,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:51:00,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:51:00,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:51:00,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:51:00,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:51:00,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:51:00,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:51:00,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:51:00,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:51:00,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:51:00,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:51:00,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:51:00,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:51:00,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:51:00,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:51:00,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:51:00,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:51:00,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:51:00,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:51:00,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:51:00,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:51:00,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:51:00,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:51:00,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:51:00,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:51:00,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:51:00,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:51:00,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:51:00,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:51:00,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:51:00,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:51:00,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:51:00,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:51:00,845 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:51:00,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:51:00,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:51:00,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:51:00,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:51:00,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:51:00,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:51:00,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:51:00,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:51:00,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:51:00,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:51:00,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:51:00,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:51:00,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:51:00,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:51:00,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:51:00,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:51:00,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:51:00,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:51:00,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:51:00,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:51:00,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:51:00,853 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:51:00,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:51:00,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:51:00,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:51:00,854 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_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2021-11-09 09:51:01,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:51:01,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:51:01,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:51:01,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:51:01,235 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:51:01,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-09 09:51:01,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/1e4a7c57a/2e571ba084fd43159d688afef2c38371/FLAGf0f92a306 [2021-11-09 09:51:02,001 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:51:02,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-09 09:51:02,011 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/1e4a7c57a/2e571ba084fd43159d688afef2c38371/FLAGf0f92a306 [2021-11-09 09:51:02,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/1e4a7c57a/2e571ba084fd43159d688afef2c38371 [2021-11-09 09:51:02,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:51:02,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:51:02,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:51:02,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:51:02,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:51:02,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cbc579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02, skipping insertion in model container [2021-11-09 09:51:02,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:51:02,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:51:02,590 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_872e90b0-46bd-4cc3-bac6-53a35b4e585a/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-09 09:51:02,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:51:02,605 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:51:02,693 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_872e90b0-46bd-4cc3-bac6-53a35b4e585a/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-09 09:51:02,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:51:02,721 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:51:02,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02 WrapperNode [2021-11-09 09:51:02,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:51:02,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:51:02,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:51:02,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:51:02,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:51:02,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:51:02,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:51:02,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:51:02,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:51:02,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:51:02,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:51:02,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:51:02,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (1/1) ... [2021-11-09 09:51:02,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:51:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:02,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:51:02,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:51:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:51:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:51:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-09 09:51:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:51:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-09 09:51:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:51:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:51:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:51:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-09 09:51:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:51:03,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:51:03,440 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-09 09:51:03,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:03 BoogieIcfgContainer [2021-11-09 09:51:03,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:51:03,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:51:03,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:51:03,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:51:03,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:51:02" (1/3) ... [2021-11-09 09:51:03,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb83850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:51:03, skipping insertion in model container [2021-11-09 09:51:03,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:02" (2/3) ... [2021-11-09 09:51:03,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb83850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:51:03, skipping insertion in model container [2021-11-09 09:51:03,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:03" (3/3) ... [2021-11-09 09:51:03,480 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2021-11-09 09:51:03,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:51:03,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:51:03,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:51:03,574 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 [2021-11-09 09:51:03,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:51:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-11-09 09:51:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:51:03,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:03,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:03,596 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-11-09 09:51:03,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:03,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470310739] [2021-11-09 09:51:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:03,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:03,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:03,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470310739] [2021-11-09 09:51:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470310739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:03,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:03,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:51:03,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141551921] [2021-11-09 09:51:03,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:51:03,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:03,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:51:03,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:51:03,806 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-09 09:51:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:03,823 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-11-09 09:51:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:51:03,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-09 09:51:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:03,833 INFO L225 Difference]: With dead ends: 72 [2021-11-09 09:51:03,834 INFO L226 Difference]: Without dead ends: 34 [2021-11-09 09:51:03,836 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 [2021-11-09 09:51:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-09 09:51:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-09 09:51:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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) [2021-11-09 09:51:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-11-09 09:51:03,869 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-11-09 09:51:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:03,869 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-11-09 09:51:03,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-09 09:51:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-11-09 09:51:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:51:03,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:03,871 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:03,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:51:03,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-11-09 09:51:03,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:03,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577915940] [2021-11-09 09:51:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:03,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:51:03,938 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:51:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:51:04,040 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:51:04,040 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 09:51:04,042 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:51:04,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:51:04,047 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 09:51:04,050 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:51:04,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:51:04 BoogieIcfgContainer [2021-11-09 09:51:04,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:51:04,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:51:04,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:51:04,084 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:51:04,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:03" (3/4) ... [2021-11-09 09:51:04,088 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 09:51:04,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:51:04,090 INFO L168 Benchmark]: Toolchain (without parser) took 1796.22 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 43.8 MB in the beginning and 45.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:04,091 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:51:04,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.60 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 43.6 MB in the beginning and 72.9 MB in the end (delta: -29.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:04,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.53 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 70.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:04,093 INFO L168 Benchmark]: Boogie Preprocessor took 49.72 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 68.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:51:04,094 INFO L168 Benchmark]: RCFGBuilder took 604.03 ms. Allocated memory is still 98.6 MB. Free memory was 68.7 MB in the beginning and 76.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:04,094 INFO L168 Benchmark]: TraceAbstraction took 632.84 ms. Allocated memory is still 98.6 MB. Free memory was 75.5 MB in the beginning and 45.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:04,095 INFO L168 Benchmark]: Witness Printer took 4.13 ms. Allocated memory is still 98.6 MB. Free memory was 45.4 MB in the beginning and 45.0 MB in the end (delta: 426.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:04,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 79.7 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.60 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 43.6 MB in the beginning and 72.9 MB in the end (delta: -29.3 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.53 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 70.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.72 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 68.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 604.03 ms. Allocated memory is still 98.6 MB. Free memory was 68.7 MB in the beginning and 76.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 632.84 ms. Allocated memory is still 98.6 MB. Free memory was 75.5 MB in the beginning and 45.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.13 ms. Allocated memory is still 98.6 MB. Free memory was 45.4 MB in the beginning and 45.0 MB in the end (delta: 426.8 kB). 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 - UnprovableResult [Line: 144]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L139] float x = -0.0f; [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L65] COND TRUE ix >= 0x50800000 VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 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: 48 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=37occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2021-11-09 09:51:04,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:51:06,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:51:06,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:51:06,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:51:06,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:51:06,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:51:06,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:51:06,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:51:06,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:51:06,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:51:06,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:51:06,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:51:06,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:51:06,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:51:06,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:51:06,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:51:06,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:51:06,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:51:06,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:51:06,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:51:06,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:51:06,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:51:06,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:51:06,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:51:06,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:51:06,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:51:06,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:51:06,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:51:06,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:51:06,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:51:06,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:51:06,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:51:06,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:51:06,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:51:06,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:51:06,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:51:06,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:51:06,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:51:06,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:51:06,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:51:06,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:51:06,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 09:51:07,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:51:07,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:51:07,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:51:07,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:51:07,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:51:07,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:51:07,029 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:51:07,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:51:07,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:51:07,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:51:07,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:51:07,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:51:07,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:51:07,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:51:07,036 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:51:07,036 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:51:07,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:51:07,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:51:07,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:51:07,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:51:07,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:51:07,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:51:07,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:51:07,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:51:07,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:51:07,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:51:07,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:51:07,039 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:51:07,040 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:51:07,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:51:07,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:51:07,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:51:07,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:51:07,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:51:07,042 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_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2021-11-09 09:51:07,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:51:07,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:51:07,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:51:07,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:51:07,547 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:51:07,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-09 09:51:07,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/aae4ebbb3/687a6b552d3c4388b65d6f7db2de8a50/FLAG149e5ebb4 [2021-11-09 09:51:08,216 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:51:08,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-11-09 09:51:08,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/aae4ebbb3/687a6b552d3c4388b65d6f7db2de8a50/FLAG149e5ebb4 [2021-11-09 09:51:08,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/data/aae4ebbb3/687a6b552d3c4388b65d6f7db2de8a50 [2021-11-09 09:51:08,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:51:08,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:51:08,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:51:08,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:51:08,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:51:08,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:51:08" (1/1) ... [2021-11-09 09:51:08,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121f7d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:08, skipping insertion in model container [2021-11-09 09:51:08,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:51:08" (1/1) ... [2021-11-09 09:51:08,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:51:08,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:51:08,928 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_872e90b0-46bd-4cc3-bac6-53a35b4e585a/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-09 09:51:08,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:51:08,950 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:51:09,092 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_872e90b0-46bd-4cc3-bac6-53a35b4e585a/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-11-09 09:51:09,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:51:09,120 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:51:09,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09 WrapperNode [2021-11-09 09:51:09,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:51:09,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:51:09,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:51:09,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:51:09,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:51:09,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:51:09,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:51:09,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:51:09,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:51:09,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:51:09,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:51:09,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:51:09,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (1/1) ... [2021-11-09 09:51:09,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:51:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:09,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:51:09,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:51:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-09 09:51:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:51:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:51:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-09 09:51:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:51:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:51:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:51:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-09 09:51:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:51:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:51:21,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:51:21,143 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-09 09:51:21,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:21 BoogieIcfgContainer [2021-11-09 09:51:21,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:51:21,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:51:21,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:51:21,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:51:21,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:51:08" (1/3) ... [2021-11-09 09:51:21,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6365a55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:51:21, skipping insertion in model container [2021-11-09 09:51:21,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:51:09" (2/3) ... [2021-11-09 09:51:21,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6365a55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:51:21, skipping insertion in model container [2021-11-09 09:51:21,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:21" (3/3) ... [2021-11-09 09:51:21,186 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2021-11-09 09:51:21,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:51:21,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:51:21,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:51:21,256 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 [2021-11-09 09:51:21,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:51:21,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2021-11-09 09:51:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:51:21,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:21,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:21,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-11-09 09:51:21,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:21,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426707960] [2021-11-09 09:51:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:21,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:21,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:21,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:21,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:51:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:22,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:51:22,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:22,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:22,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:22,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426707960] [2021-11-09 09:51:22,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426707960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:22,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:22,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:51:22,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013465973] [2021-11-09 09:51:22,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:51:22,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:51:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:51:22,602 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-09 09:51:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:22,625 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-11-09 09:51:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:51:22,626 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-09 09:51:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:22,634 INFO L225 Difference]: With dead ends: 72 [2021-11-09 09:51:22,634 INFO L226 Difference]: Without dead ends: 34 [2021-11-09 09:51:22,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:51:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-09 09:51:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-09 09:51:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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) [2021-11-09 09:51:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-11-09 09:51:22,667 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-11-09 09:51:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:22,668 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-11-09 09:51:22,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-09 09:51:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-11-09 09:51:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:51:22,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:22,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:22,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 09:51:22,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:22,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:22,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-11-09 09:51:22,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:22,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258238354] [2021-11-09 09:51:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:22,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:22,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:22,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:22,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:51:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:24,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:51:24,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:24,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:24,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:24,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258238354] [2021-11-09 09:51:24,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258238354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:24,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:24,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-09 09:51:24,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100753384] [2021-11-09 09:51:24,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:51:24,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:51:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:51:24,893 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-09 09:51:31,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:31,972 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-11-09 09:51:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:51:31,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 11 [2021-11-09 09:51:31,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:31,975 INFO L225 Difference]: With dead ends: 57 [2021-11-09 09:51:31,975 INFO L226 Difference]: Without dead ends: 32 [2021-11-09 09:51:31,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:51:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-09 09:51:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-11-09 09:51:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-11-09 09:51:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-09 09:51:31,983 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2021-11-09 09:51:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:31,984 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-09 09:51:31,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-09 09:51:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-09 09:51:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 09:51:31,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:31,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:32,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-09 09:51:32,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:32,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:32,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2021-11-09 09:51:32,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:32,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591908350] [2021-11-09 09:51:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:32,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:32,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:32,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:32,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:51:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:33,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:51:33,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:33,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:33,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:33,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591908350] [2021-11-09 09:51:33,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591908350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:33,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:33,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-09 09:51:33,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737629662] [2021-11-09 09:51:33,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:51:33,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:51:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:51:33,762 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-11-09 09:51:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:41,729 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-11-09 09:51:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:51:41,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 13 [2021-11-09 09:51:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:41,732 INFO L225 Difference]: With dead ends: 35 [2021-11-09 09:51:41,732 INFO L226 Difference]: Without dead ends: 32 [2021-11-09 09:51:41,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:51:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-09 09:51:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-11-09 09:51:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-11-09 09:51:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-11-09 09:51:41,740 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2021-11-09 09:51:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:41,741 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-11-09 09:51:41,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2021-11-09 09:51:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-11-09 09:51:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 09:51:41,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:41,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:41,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:41,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:41,945 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2021-11-09 09:51:41,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:41,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965271048] [2021-11-09 09:51:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:41,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:41,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:41,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:41,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:51:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:43,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:51:43,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:44,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:46,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:46,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965271048] [2021-11-09 09:51:46,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965271048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:46,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:46,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:51:46,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165538873] [2021-11-09 09:51:46,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:51:46,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:51:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:51:46,915 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-09 09:51:47,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:47,226 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-11-09 09:51:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:51:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 16 [2021-11-09 09:51:47,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:47,232 INFO L225 Difference]: With dead ends: 32 [2021-11-09 09:51:47,232 INFO L226 Difference]: Without dead ends: 18 [2021-11-09 09:51:47,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:51:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-09 09:51:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-09 09:51:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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) [2021-11-09 09:51:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-11-09 09:51:47,236 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2021-11-09 09:51:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:47,237 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-11-09 09:51:47,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-09 09:51:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-11-09 09:51:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 09:51:47,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:47,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:47,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-09 09:51:47,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:47,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2021-11-09 09:51:47,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:51:47,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237647887] [2021-11-09 09:51:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:47,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:51:47,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:51:47,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:51:47,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:51:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:48,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:51:48,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:49,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:51:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:50,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:51:50,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237647887] [2021-11-09 09:51:50,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237647887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:50,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:50,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-09 09:51:50,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390382253] [2021-11-09 09:51:50,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:51:50,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:51:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:51:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:51:50,902 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-09 09:51:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:51,737 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-11-09 09:51:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:51:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 17 [2021-11-09 09:51:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:51,739 INFO L225 Difference]: With dead ends: 18 [2021-11-09 09:51:51,739 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 09:51:51,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:51:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 09:51:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 09:51:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-09 09:51:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 09:51:51,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-09 09:51:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:51,741 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 09:51:51,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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) [2021-11-09 09:51:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 09:51:51,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 09:51:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:51:51,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:51,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:51:51,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 09:51:51,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:51:52,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:51:52,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:51:52,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:51:52,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:51:52,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:51:52,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:51:52,622 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-11-09 09:51:52,623 INFO L857 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2021-11-09 09:51:52,623 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 09:51:52,623 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 09:51:52,624 INFO L853 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: false [2021-11-09 09:51:52,624 INFO L857 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2021-11-09 09:51:52,624 INFO L857 garLoopResultBuilder]: For program point L111(lines 111 116) no Hoare annotation was computed. [2021-11-09 09:51:52,625 INFO L853 garLoopResultBuilder]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short32| (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start___signbit_float_#res| (_ bv1 32)) (= .cse0 |ULTIMATE.start_atan_float_#res|) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= currentRoundingMode roundNearestTiesToEven))) [2021-11-09 09:51:52,625 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2021-11-09 09:51:52,625 INFO L853 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short32| (= ULTIMATE.start_atan_float_~x .cse0) (= .cse0 |ULTIMATE.start_atan_float_#res|) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= currentRoundingMode roundNearestTiesToEven))) [2021-11-09 09:51:52,626 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-11-09 09:51:52,626 INFO L857 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2021-11-09 09:51:52,626 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-11-09 09:51:52,626 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-11-09 09:51:52,627 INFO L857 garLoopResultBuilder]: For program point L81(lines 81 97) no Hoare annotation was computed. [2021-11-09 09:51:52,627 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2021-11-09 09:51:52,627 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2021-11-09 09:51:52,627 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 09:51:52,627 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 96) no Hoare annotation was computed. [2021-11-09 09:51:52,628 INFO L857 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2021-11-09 09:51:52,628 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2021-11-09 09:51:52,628 INFO L860 garLoopResultBuilder]: At program point L148(lines 131 149) the Hoare annotation is: true [2021-11-09 09:51:52,628 INFO L857 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2021-11-09 09:51:52,629 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 88) no Hoare annotation was computed. [2021-11-09 09:51:52,629 INFO L857 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2021-11-09 09:51:52,629 INFO L853 garLoopResultBuilder]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= .cse0 |ULTIMATE.start_atan_float_#res|) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven))) [2021-11-09 09:51:52,630 INFO L857 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2021-11-09 09:51:52,630 INFO L857 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2021-11-09 09:51:52,630 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 67) no Hoare annotation was computed. [2021-11-09 09:51:52,630 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 09:51:52,631 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2021-11-09 09:51:52,631 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2021-11-09 09:51:52,631 INFO L853 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (fp.neg (_ +zero 8 24))) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-09 09:51:52,631 INFO L857 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2021-11-09 09:51:52,632 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-11-09 09:51:52,632 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2021-11-09 09:51:52,632 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 71) no Hoare annotation was computed. [2021-11-09 09:51:52,636 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-09 09:51:52,638 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:51:52,650 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,661 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,662 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,663 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,664 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,665 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,670 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,682 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:51:52 BoogieIcfgContainer [2021-11-09 09:51:52,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:51:52,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:51:52,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:51:52,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:51:52,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:21" (3/4) ... [2021-11-09 09:51:52,688 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 09:51:52,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-09 09:51:52,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-09 09:51:52,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:51:52,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:51:52,741 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-09 09:51:52,743 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-09 09:51:52,744 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-09 09:51:52,799 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:51:52,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:51:52,801 INFO L168 Benchmark]: Toolchain (without parser) took 44237.86 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 54.7 MB in the beginning and 57.2 MB in the end (delta: -2.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:52,801 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 52.4 MB. Free memory is still 34.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:51:52,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.80 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 55.0 MB in the end (delta: -322.0 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:52,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.46 ms. Allocated memory is still 73.4 MB. Free memory was 55.0 MB in the beginning and 52.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:52,803 INFO L168 Benchmark]: Boogie Preprocessor took 80.73 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:52,804 INFO L168 Benchmark]: RCFGBuilder took 11877.79 ms. Allocated memory is still 73.4 MB. Free memory was 50.3 MB in the beginning and 55.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:52,805 INFO L168 Benchmark]: TraceAbstraction took 31509.78 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 62.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:52,806 INFO L168 Benchmark]: Witness Printer took 114.98 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 57.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:51:52,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 52.4 MB. Free memory is still 34.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.80 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 55.0 MB in the end (delta: -322.0 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.46 ms. Allocated memory is still 73.4 MB. Free memory was 55.0 MB in the beginning and 52.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.73 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11877.79 ms. Allocated memory is still 73.4 MB. Free memory was 50.3 MB in the beginning and 55.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31509.78 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 62.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 114.98 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 57.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 144]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 162 SDslu, 201 SDs, 0 SdLazy, 81 SolverSat, 13 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 25, 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 134 HoareAnnotationTreeSize, 7 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 12 QuantifiedInterpolants, 676 SizeOfPredicates, 28 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant [2021-11-09 09:51:52,828 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,830 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant [2021-11-09 09:51:52,832 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,833 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 122]: Loop Invariant [2021-11-09 09:51:52,834 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,836 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 55]: Loop Invariant [2021-11-09 09:51:52,842 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-09 09:51:52,843 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-11-09 09:51:52,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_872e90b0-46bd-4cc3-bac6-53a35b4e585a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE