./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 858612fdb9071600e83746a6e504d4acbbe533c1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 858612fdb9071600e83746a6e504d4acbbe533c1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:29:44,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:44,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:44,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:44,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:44,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:44,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:44,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:44,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:44,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:44,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:44,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:44,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:44,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:44,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:44,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:44,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:44,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:44,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:44,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:44,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:44,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:44,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:44,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:44,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:44,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:44,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:44,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:44,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:44,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:44,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:44,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:44,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:44,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:44,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:44,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:44,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:44,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:44,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:44,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:44,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:44,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:29:44,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:44,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:44,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:44,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:44,964 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:44,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:44,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:44,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:44,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:44,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:44,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:44,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:44,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:44,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:44,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:44,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:44,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:44,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:44,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:44,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:44,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:44,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:44,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:44,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:44,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:44,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:44,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:44,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:44,977 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_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2021-10-11 00:29:45,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:45,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:45,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:45,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:45,285 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:45,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-11 00:29:45,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/4c344ceea/b132aed9418343ce9caa0d109a428aa3/FLAGfd2a43313 [2021-10-11 00:29:45,842 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:45,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-11 00:29:45,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/4c344ceea/b132aed9418343ce9caa0d109a428aa3/FLAGfd2a43313 [2021-10-11 00:29:46,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/4c344ceea/b132aed9418343ce9caa0d109a428aa3 [2021-10-11 00:29:46,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:46,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:46,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:46,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:46,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:46,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128c5cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46, skipping insertion in model container [2021-10-11 00:29:46,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:46,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:46,471 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-11 00:29:46,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:46,497 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:46,539 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-11 00:29:46,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:46,563 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:46,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46 WrapperNode [2021-10-11 00:29:46,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:46,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:46,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:46,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:46,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:46,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:46,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:46,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:46,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... [2021-10-11 00:29:46,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:46,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:46,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:46,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:46,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:29:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 00:29:46,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:46,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:29:46,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:29:47,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:47,087 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 00:29:47,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:47 BoogieIcfgContainer [2021-10-11 00:29:47,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:47,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:47,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:47,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:47,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:46" (1/3) ... [2021-10-11 00:29:47,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f4e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:47, skipping insertion in model container [2021-10-11 00:29:47,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:46" (2/3) ... [2021-10-11 00:29:47,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f4e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:47, skipping insertion in model container [2021-10-11 00:29:47,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:47" (3/3) ... [2021-10-11 00:29:47,109 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-10-11 00:29:47,139 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:47,142 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:29:47,153 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:29:47,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:47,177 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:47,177 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:47,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:47,177 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:47,177 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:47,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:47,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 00:29:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:29:47,195 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:47,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:47,196 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:47,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:47,201 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-11 00:29:47,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:47,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506128121] [2021-10-11 00:29:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:47,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506128121] [2021-10-11 00:29:47,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:47,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:47,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313226201] [2021-10-11 00:29:47,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:29:47,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:47,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:29:47,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:47,433 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2021-10-11 00:29:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:47,450 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-11 00:29:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:29:47,452 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 00:29:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:47,461 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:29:47,461 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:29:47,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:29:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 00:29:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:29:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-11 00:29:47,498 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-11 00:29:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:47,499 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-11 00:29:47,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:29:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-11 00:29:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:29:47,500 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:47,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:47,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:47,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:47,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-11 00:29:47,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:47,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880162478] [2021-10-11 00:29:47,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:47,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880162478] [2021-10-11 00:29:47,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:47,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:47,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539627045] [2021-10-11 00:29:47,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:47,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:47,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:47,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:47,589 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2021-10-11 00:29:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:47,664 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-11 00:29:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:47,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:29:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:47,667 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:29:47,668 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:29:47,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:47,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:29:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-11 00:29:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:47,680 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-11 00:29:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:47,681 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:47,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:29:47,683 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:47,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:47,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:29:47,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:47,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:47,687 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-10-11 00:29:47,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:47,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653939819] [2021-10-11 00:29:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:47,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653939819] [2021-10-11 00:29:47,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:47,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:47,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70850628] [2021-10-11 00:29:47,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:47,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:47,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:47,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:47,805 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:29:47,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:47,874 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:29:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:47,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:29:47,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:47,881 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:29:47,881 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:29:47,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:29:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:29:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:47,898 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-10-11 00:29:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:47,899 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:47,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:29:47,900 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:47,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:47,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:29:47,901 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-10-11 00:29:47,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:47,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122419720] [2021-10-11 00:29:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:47,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122419720] [2021-10-11 00:29:47,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:47,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:47,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232978534] [2021-10-11 00:29:47,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:47,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:47,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:47,998 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:29:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:48,080 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-10-11 00:29:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:48,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:29:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:48,082 INFO L225 Difference]: With dead ends: 45 [2021-10-11 00:29:48,082 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 00:29:48,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:48,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 00:29:48,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-10-11 00:29:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:48,095 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-10-11 00:29:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:48,096 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:48,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:29:48,097 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:48,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:48,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:29:48,098 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:48,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-10-11 00:29:48,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:48,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013816540] [2021-10-11 00:29:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:48,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013816540] [2021-10-11 00:29:48,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:48,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:48,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505398741] [2021-10-11 00:29:48,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:48,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:48,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:48,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:48,188 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:29:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:48,250 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:29:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:48,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 00:29:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:48,252 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:29:48,252 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:29:48,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:29:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:29:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:48,265 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-10-11 00:29:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:48,265 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:48,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:48,266 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:29:48,267 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:48,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:48,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:29:48,268 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:48,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-11 00:29:48,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:48,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263317174] [2021-10-11 00:29:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:48,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:48,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:48,404 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:48,404 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:29:48,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:29:48,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:29:48 BoogieIcfgContainer [2021-10-11 00:29:48,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:29:48,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:48,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:48,443 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:48,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:47" (3/4) ... [2021-10-11 00:29:48,447 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:29:48,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:48,449 INFO L168 Benchmark]: Toolchain (without parser) took 2241.86 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 71.4 MB in the beginning and 77.2 MB in the end (delta: -5.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:48,450 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 100.7 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:48,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.76 ms. Allocated memory is still 100.7 MB. Free memory was 71.3 MB in the beginning and 76.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:48,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.66 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:48,452 INFO L168 Benchmark]: Boogie Preprocessor took 40.56 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:48,452 INFO L168 Benchmark]: RCFGBuilder took 416.53 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 54.3 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:48,453 INFO L168 Benchmark]: TraceAbstraction took 1352.00 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 54.0 MB in the beginning and 77.9 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:48,454 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 121.6 MB. Free memory was 77.9 MB in the beginning and 77.2 MB in the end (delta: 712.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:48,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 100.7 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.76 ms. Allocated memory is still 100.7 MB. Free memory was 71.3 MB in the beginning and 76.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.66 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.56 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 416.53 ms. Allocated memory is still 100.7 MB. Free memory was 72.8 MB in the beginning and 54.3 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1352.00 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 54.0 MB in the beginning and 77.9 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.53 ms. Allocated memory is still 121.6 MB. Free memory was 77.9 MB in the beginning and 77.2 MB in the end (delta: 712.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:29:50,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:50,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:51,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:51,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:51,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:51,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:51,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:51,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:51,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:51,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:51,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:51,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:51,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:51,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:51,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:51,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:51,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:51,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:51,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:51,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:51,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:51,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:51,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:51,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:51,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:51,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:51,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:51,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:51,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:51,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:51,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:51,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:51,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:51,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:51,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:51,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:51,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:51,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:51,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:51,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:51,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-11 00:29:51,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:51,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:51,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:51,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:51,169 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:51,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:51,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:51,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:51,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:51,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:51,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:51,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:51,172 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 00:29:51,172 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 00:29:51,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:51,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:51,173 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:51,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:51,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:51,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:51,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:51,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:51,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:51,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:51,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:51,175 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-11 00:29:51,175 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 00:29:51,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:51,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:51,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 00:29:51,176 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_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2021-10-11 00:29:51,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:51,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:51,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:51,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:51,538 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:51,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-11 00:29:51,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/87e56e730/bced373c4cdf4fb7ba53fcf5425d6ec6/FLAGaeaec2848 [2021-10-11 00:29:52,100 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:52,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-11 00:29:52,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/87e56e730/bced373c4cdf4fb7ba53fcf5425d6ec6/FLAGaeaec2848 [2021-10-11 00:29:52,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/data/87e56e730/bced373c4cdf4fb7ba53fcf5425d6ec6 [2021-10-11 00:29:52,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:52,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:52,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:52,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:52,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:52,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a9fc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52, skipping insertion in model container [2021-10-11 00:29:52,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:52,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:52,693 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-11 00:29:52,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:52,708 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:52,729 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-11 00:29:52,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:52,750 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:52,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52 WrapperNode [2021-10-11 00:29:52,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:52,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:52,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:52,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:52,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:52,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:52,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:52,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:52,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... [2021-10-11 00:29:52,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:52,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:52,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:52,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:52,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-11 00:29:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 00:29:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 00:29:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:29:53,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:53,474 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 00:29:53,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:53 BoogieIcfgContainer [2021-10-11 00:29:53,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:53,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:53,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:53,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:53,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:52" (1/3) ... [2021-10-11 00:29:53,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d5eee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:53, skipping insertion in model container [2021-10-11 00:29:53,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:52" (2/3) ... [2021-10-11 00:29:53,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d5eee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:53, skipping insertion in model container [2021-10-11 00:29:53,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:53" (3/3) ... [2021-10-11 00:29:53,482 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-10-11 00:29:53,498 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:53,501 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:29:53,512 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:29:53,551 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:53,551 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:53,551 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:53,551 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:53,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:53,552 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:53,552 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:53,552 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 00:29:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:29:53,574 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:53,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:53,575 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-11 00:29:53,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:53,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287067973] [2021-10-11 00:29:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:53,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 00:29:53,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:53,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:53,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287067973] [2021-10-11 00:29:53,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:53,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:53,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610654144] [2021-10-11 00:29:53,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:29:53,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:53,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:29:53,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:53,876 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2021-10-11 00:29:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:53,907 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-11 00:29:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:29:53,909 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 00:29:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:53,917 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:29:53,917 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:29:53,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:29:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 00:29:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:29:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-11 00:29:53,953 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-11 00:29:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:53,953 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-11 00:29:53,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:29:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-11 00:29:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:29:53,954 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:53,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:54,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 00:29:54,155 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-11 00:29:54,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62359364] [2021-10-11 00:29:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:54,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:54,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:54,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:54,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62359364] [2021-10-11 00:29:54,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:54,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:54,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457603266] [2021-10-11 00:29:54,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:54,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:54,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:54,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:54,349 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2021-10-11 00:29:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:54,425 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-11 00:29:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:54,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:29:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:54,427 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:29:54,427 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:29:54,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:29:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-11 00:29:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:54,434 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-11 00:29:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:54,435 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:54,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:29:54,436 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:54,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:54,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 00:29:54,652 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:54,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:54,653 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-10-11 00:29:54,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:54,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069433483] [2021-10-11 00:29:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:54,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:54,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:54,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:54,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069433483] [2021-10-11 00:29:54,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:54,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:54,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38004328] [2021-10-11 00:29:54,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:54,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:54,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:54,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:54,829 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:29:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:54,993 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:29:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:54,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:29:54,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:54,995 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:29:54,995 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:29:54,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:29:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:29:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:55,001 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-10-11 00:29:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:55,001 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:55,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:29:55,002 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:55,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:55,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 00:29:55,220 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:55,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-10-11 00:29:55,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:55,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935172698] [2021-10-11 00:29:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:55,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:55,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:55,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:55,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935172698] [2021-10-11 00:29:55,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:55,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:55,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417242885] [2021-10-11 00:29:55,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:55,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:55,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:55,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:55,389 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:29:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:55,499 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:29:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:55,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:29:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:55,501 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:29:55,501 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:29:55,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:55,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:29:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:29:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:55,507 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-10-11 00:29:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:55,507 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:55,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:29:55,508 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:55,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:55,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 00:29:55,723 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-10-11 00:29:55,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:55,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73157207] [2021-10-11 00:29:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:55,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:55,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:55,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:55,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73157207] [2021-10-11 00:29:55,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:55,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:55,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904919744] [2021-10-11 00:29:55,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:55,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:55,846 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:29:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:55,949 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:29:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:55,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 00:29:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:55,950 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:29:55,950 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:29:55,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:29:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:29:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:29:55,955 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-10-11 00:29:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:55,956 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:29:55,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:29:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:29:55,957 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:55,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:56,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 00:29:56,163 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-11 00:29:56,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:56,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291604062] [2021-10-11 00:29:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:56,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:29:56,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:56,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:56,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291604062] [2021-10-11 00:29:56,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:56,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:29:56,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712934585] [2021-10-11 00:29:56,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:29:56,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:56,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:29:56,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:29:56,419 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 6 states. [2021-10-11 00:29:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:56,722 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-10-11 00:29:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:29:56,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 00:29:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:56,725 INFO L225 Difference]: With dead ends: 36 [2021-10-11 00:29:56,725 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:29:56,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:29:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:29:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-11 00:29:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:29:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-11 00:29:56,730 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-11 00:29:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:56,731 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-11 00:29:56,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:29:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-11 00:29:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:29:56,731 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:56,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:56,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 00:29:56,947 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:56,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:56,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-10-11 00:29:56,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:56,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309731294] [2021-10-11 00:29:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:57,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:57,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:57,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309731294] [2021-10-11 00:29:57,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:57,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:57,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736755230] [2021-10-11 00:29:57,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:57,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:57,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:57,096 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 4 states. [2021-10-11 00:29:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:57,169 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-10-11 00:29:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:57,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 00:29:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:57,171 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:29:57,171 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:29:57,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:29:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-11 00:29:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-11 00:29:57,176 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-10-11 00:29:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:57,177 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-11 00:29:57,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-11 00:29:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:29:57,177 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:57,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:57,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 00:29:57,397 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash 874917212, now seen corresponding path program 1 times [2021-10-11 00:29:57,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:57,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765515179] [2021-10-11 00:29:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:57,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:57,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:57,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:57,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765515179] [2021-10-11 00:29:57,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:57,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:57,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438161783] [2021-10-11 00:29:57,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:57,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:57,540 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2021-10-11 00:29:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:57,627 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-10-11 00:29:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:57,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 00:29:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:57,628 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:29:57,628 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:29:57,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:29:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:29:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:29:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-11 00:29:57,634 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 17 [2021-10-11 00:29:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:57,634 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-11 00:29:57,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-11 00:29:57,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:29:57,635 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:57,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:57,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 00:29:57,852 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-10-11 00:29:57,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:57,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464648404] [2021-10-11 00:29:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:57,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:29:57,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:58,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:58,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464648404] [2021-10-11 00:29:58,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:58,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:29:58,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522520514] [2021-10-11 00:29:58,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:29:58,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:58,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:29:58,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:29:58,148 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 7 states. [2021-10-11 00:29:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:58,512 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-10-11 00:29:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:29:58,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-10-11 00:29:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:58,514 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:29:58,514 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:29:58,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:29:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:29:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 00:29:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:29:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-10-11 00:29:58,518 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2021-10-11 00:29:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:58,518 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-10-11 00:29:58,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:29:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-10-11 00:29:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:29:58,519 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:58,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:58,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 00:29:58,730 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1049576048, now seen corresponding path program 1 times [2021-10-11 00:29:58,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:58,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216416970] [2021-10-11 00:29:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:58,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:58,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:58,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:58,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216416970] [2021-10-11 00:29:58,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:58,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:58,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223181145] [2021-10-11 00:29:58,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:58,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:58,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:58,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:58,866 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2021-10-11 00:29:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:58,951 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-11 00:29:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:58,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 00:29:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:58,952 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:29:58,952 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:29:58,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:29:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-11 00:29:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:29:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-11 00:29:58,957 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2021-10-11 00:29:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:58,957 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-11 00:29:58,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-10-11 00:29:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:29:58,958 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:58,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:59,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 00:29:59,171 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1983383519, now seen corresponding path program 1 times [2021-10-11 00:29:59,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:59,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474899017] [2021-10-11 00:29:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:59,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:29:59,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:59,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:59,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474899017] [2021-10-11 00:29:59,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:59,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:59,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484957063] [2021-10-11 00:29:59,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:59,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:59,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:59,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:59,303 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2021-10-11 00:29:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:59,363 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-11 00:29:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:59,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 00:29:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:59,367 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:29:59,367 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:29:59,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:29:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-11 00:29:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:29:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-11 00:29:59,371 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2021-10-11 00:29:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:59,371 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-11 00:29:59,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-11 00:29:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:29:59,372 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:59,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:59,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 00:29:59,579 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:59,580 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-10-11 00:29:59,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:29:59,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603312409] [2021-10-11 00:29:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 00:29:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:59,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:29:59,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:59,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:29:59,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603312409] [2021-10-11 00:29:59,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:59,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:29:59,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022658233] [2021-10-11 00:29:59,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:29:59,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:29:59,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:29:59,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:29:59,792 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2021-10-11 00:29:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:59,952 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-11 00:29:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:29:59,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-10-11 00:29:59,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:59,952 INFO L225 Difference]: With dead ends: 23 [2021-10-11 00:29:59,952 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:29:59,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:29:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:29:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:29:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:29:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:29:59,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-11 00:29:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:59,953 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:29:59,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:29:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:29:59,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:30:00,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 00:30:00,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:30:00,488 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-10-11 00:30:00,653 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L258 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|))) [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2021-10-11 00:30:00,654 INFO L262 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-10-11 00:30:00,655 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:30:00,655 INFO L262 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-10-11 00:30:00,655 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-10-11 00:30:00,655 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~x))) [2021-10-11 00:30:00,655 INFO L262 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2021-10-11 00:30:00,655 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2021-10-11 00:30:00,655 INFO L262 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2021-10-11 00:30:00,655 INFO L258 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~x))) [2021-10-11 00:30:00,655 INFO L262 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-10-11 00:30:00,656 INFO L262 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2021-10-11 00:30:00,656 INFO L258 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~x))) [2021-10-11 00:30:00,656 INFO L258 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (= (_ bv3 32) |ULTIMATE.start___fpclassify_double_#res|)) (and .cse0 (= (_ bv1 32) |ULTIMATE.start___fpclassify_double_#res|)) (and .cse0 (= (_ bv4 32) |ULTIMATE.start___fpclassify_double_#res|)) (and .cse0 (= (_ bv2 32) |ULTIMATE.start___fpclassify_double_#res|)) (and .cse0 (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~x))))) [2021-10-11 00:30:00,656 INFO L265 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2021-10-11 00:30:00,656 INFO L262 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-10-11 00:30:00,656 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2021-10-11 00:30:00,656 INFO L262 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-11 00:30:00,656 INFO L262 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2021-10-11 00:30:00,656 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2021-10-11 00:30:00,662 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,665 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,665 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,665 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,665 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,665 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,675 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,676 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,676 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,677 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,678 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,678 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,678 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,679 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,679 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,680 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,680 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,681 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,681 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,682 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,683 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,683 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,683 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,684 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,688 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,688 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,697 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:30:00 BoogieIcfgContainer [2021-10-11 00:30:00,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:30:00,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:30:00,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:30:00,699 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:30:00,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:53" (3/4) ... [2021-10-11 00:30:00,703 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:30:00,716 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-11 00:30:00,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:30:00,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:30:00,717 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:30:00,744 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2021-10-11 00:30:00,744 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2021-10-11 00:30:00,745 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-10-11 00:30:00,745 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2021-10-11 00:30:00,745 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result [2021-10-11 00:30:00,746 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 3bv32 == \result) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result)) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 4bv32 == \result)) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 2bv32 == \result)) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) [2021-10-11 00:30:00,777 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd6e944-619e-4ef5-9ce4-6e48d555ecd0/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:30:00,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:30:00,778 INFO L168 Benchmark]: Toolchain (without parser) took 8301.43 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 23.8 MB in the beginning and 51.2 MB in the end (delta: -27.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:00,779 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 48.2 MB. Free memory was 29.5 MB in the beginning and 29.5 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:00,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.36 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 23.8 MB in the end (delta: -218.3 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:00,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.17 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 42.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:00,781 INFO L168 Benchmark]: Boogie Preprocessor took 62.90 ms. Allocated memory is still 58.7 MB. Free memory was 42.3 MB in the beginning and 40.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:00,781 INFO L168 Benchmark]: RCFGBuilder took 562.92 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 35.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:00,781 INFO L168 Benchmark]: TraceAbstraction took 7222.00 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 25.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:00,782 INFO L168 Benchmark]: Witness Printer took 78.35 ms. Allocated memory is still 71.3 MB. Free memory was 25.1 MB in the beginning and 51.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:00,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 48.2 MB. Free memory was 29.5 MB in the beginning and 29.5 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.36 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 23.8 MB in the end (delta: -218.3 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.17 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 42.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.90 ms. Allocated memory is still 58.7 MB. Free memory was 42.3 MB in the beginning and 40.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 562.92 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 35.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7222.00 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 25.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * Witness Printer took 78.35 ms. Allocated memory is still 71.3 MB. Free memory was 25.1 MB in the beginning and 51.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 68]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2021-10-11 00:30:00,794 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,795 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,795 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,795 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,795 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,795 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,796 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,796 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,796 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,797 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,797 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,797 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 3bv32 == \result) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result)) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 4bv32 == \result)) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 2bv32 == \result)) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) - InvariantResult [Line: 22]: Loop Invariant [2021-10-11 00:30:00,798 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,798 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,798 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,798 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 19]: Loop Invariant [2021-10-11 00:30:00,799 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,799 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,800 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,800 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 46]: Loop Invariant [2021-10-11 00:30:00,800 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,800 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,801 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,801 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 18]: Loop Invariant [2021-10-11 00:30:00,802 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,802 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,802 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,802 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2021-10-11 00:30:00,803 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,803 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,804 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:30:00,804 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 413 SDtfs, 132 SDslu, 682 SDs, 0 SdLazy, 219 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 68 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 21 NumberOfFragments, 139 HoareAnnotationTreeSize, 7 FomulaSimplifications, 808 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 169 ConstructedInterpolants, 36 QuantifiedInterpolants, 6763 SizeOfPredicates, 35 NumberOfNonLiveVariables, 751 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...