./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD --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 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 .............................................................................................................................................................................................................................................................................................................................................. 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_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD --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 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:47:21,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:47:21,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:47:21,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:47:21,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:47:21,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:47:21,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:47:21,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:47:21,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:47:21,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:47:21,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:47:21,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:47:21,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:47:21,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:47:21,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:47:21,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:47:21,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:47:21,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:47:21,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:47:21,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:47:21,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:47:21,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:47:21,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:47:21,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:47:21,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:47:21,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:47:21,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:47:21,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:47:21,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:47:21,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:47:21,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:47:21,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:47:21,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:47:21,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:47:21,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:47:21,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:47:21,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:47:21,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:47:21,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:47:21,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:47:21,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:47:21,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:47:21,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:47:21,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:47:21,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:47:21,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:47:21,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:47:21,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:47:21,863 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:47:21,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:47:21,863 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:47:21,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:47:21,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:47:21,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:47:21,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:47:21,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:47:21,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:47:21,866 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:47:21,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:47:21,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:47:21,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:47:21,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:47:21,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:47:21,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:47:21,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:47:21,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:47:21,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:47:21,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:47:21,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:47:21,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:47:21,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:47:21,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:47:21,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:47:21,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:47:21,872 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_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 [2021-10-28 22:47:22,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:47:22,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:47:22,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:47:22,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:47:22,220 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:47:22,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-10-28 22:47:22,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/254d1f76e/13938e43de5c4000a3d4209eb794e5b7/FLAGffc716920 [2021-10-28 22:47:22,919 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:47:22,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-10-28 22:47:22,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/254d1f76e/13938e43de5c4000a3d4209eb794e5b7/FLAGffc716920 [2021-10-28 22:47:23,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/254d1f76e/13938e43de5c4000a3d4209eb794e5b7 [2021-10-28 22:47:23,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:47:23,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:47:23,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:47:23,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:47:23,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:47:23,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b51700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23, skipping insertion in model container [2021-10-28 22:47:23,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:47:23,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:47:23,625 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-10-28 22:47:23,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:47:23,640 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:47:23,701 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-10-28 22:47:23,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:47:23,728 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:47:23,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23 WrapperNode [2021-10-28 22:47:23,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:47:23,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:47:23,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:47:23,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:47:23,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:47:23,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:47:23,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:47:23,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:47:23,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:47:23,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:47:23,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:47:23,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:47:23,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (1/1) ... [2021-10-28 22:47:23,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:47:23,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:47:23,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:47:24,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:47:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:47:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:47:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 22:47:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:47:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 22:47:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:47:24,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:47:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:47:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-28 22:47:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:47:24,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:47:24,970 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-28 22:47:24,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:47:24 BoogieIcfgContainer [2021-10-28 22:47:24,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:47:24,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:47:24,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:47:24,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:47:24,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:47:23" (1/3) ... [2021-10-28 22:47:24,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b8f2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:47:24, skipping insertion in model container [2021-10-28 22:47:24,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:23" (2/3) ... [2021-10-28 22:47:24,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b8f2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:47:24, skipping insertion in model container [2021-10-28 22:47:24,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:47:24" (3/3) ... [2021-10-28 22:47:24,984 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660a.c [2021-10-28 22:47:24,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:47:24,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 22:47:25,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:47:25,061 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:47:25,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 22:47:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:47:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:47:25,091 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:47:25,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:47:25,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:47:25,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:47:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2021-10-28 22:47:25,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:47:25,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589169255] [2021-10-28 22:47:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:47:25,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:47:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:47:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:47:25,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:47:25,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589169255] [2021-10-28 22:47:25,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589169255] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:47:25,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:47:25,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:47:25,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856511312] [2021-10-28 22:47:25,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 22:47:25,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:47:25,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 22:47:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:47:25,392 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:47:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:47:25,448 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2021-10-28 22:47:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:47:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 22:47:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:47:25,462 INFO L225 Difference]: With dead ends: 227 [2021-10-28 22:47:25,463 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 22:47:25,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:47:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 22:47:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-28 22:47:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 110 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:47:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2021-10-28 22:47:25,517 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2021-10-28 22:47:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:47:25,518 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2021-10-28 22:47:25,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:47:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2021-10-28 22:47:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:47:25,520 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:47:25,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:47:25,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:47:25,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:47:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:47:25,522 INFO L85 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2021-10-28 22:47:25,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:47:25,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59429565] [2021-10-28 22:47:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:47:25,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:47:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:47:25,666 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:47:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:47:25,783 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:47:25,783 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:47:25,786 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:47:25,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:47:25,792 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 22:47:25,795 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:47:25,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:47:25 BoogieIcfgContainer [2021-10-28 22:47:25,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:47:25,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:47:25,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:47:25,844 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:47:25,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:47:24" (3/4) ... [2021-10-28 22:47:25,848 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:47:25,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:47:25,851 INFO L168 Benchmark]: Toolchain (without parser) took 2602.38 ms. Allocated memory is still 111.1 MB. Free memory was 77.3 MB in the beginning and 61.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:47:25,852 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 53.2 MB in the beginning and 53.2 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:47:25,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.20 ms. Allocated memory is still 111.1 MB. Free memory was 77.3 MB in the beginning and 84.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:47:25,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.77 ms. Allocated memory is still 111.1 MB. Free memory was 84.0 MB in the beginning and 81.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:47:25,855 INFO L168 Benchmark]: Boogie Preprocessor took 115.09 ms. Allocated memory is still 111.1 MB. Free memory was 80.5 MB in the beginning and 77.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:47:25,856 INFO L168 Benchmark]: RCFGBuilder took 1033.81 ms. Allocated memory is still 111.1 MB. Free memory was 77.7 MB in the beginning and 50.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:47:25,857 INFO L168 Benchmark]: TraceAbstraction took 867.91 ms. Allocated memory is still 111.1 MB. Free memory was 49.7 MB in the beginning and 61.9 MB in the end (delta: -12.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:47:25,857 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 111.1 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:47:25,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 53.2 MB in the beginning and 53.2 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 479.20 ms. Allocated memory is still 111.1 MB. Free memory was 77.3 MB in the beginning and 84.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.77 ms. Allocated memory is still 111.1 MB. Free memory was 84.0 MB in the beginning and 81.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 115.09 ms. Allocated memory is still 111.1 MB. Free memory was 80.5 MB in the beginning and 77.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1033.81 ms. Allocated memory is still 111.1 MB. Free memory was 77.7 MB in the beginning and 50.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 867.91 ms. Allocated memory is still 111.1 MB. Free memory was 49.7 MB in the beginning and 61.9 MB in the end (delta: -12.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.27 ms. Allocated memory is still 111.1 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 261]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 253, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 260. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L252] double x = __VERIFIER_nondet_double(); [L253] double y = -0.0; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L255] COND TRUE x < 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != -pi VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L261] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 164 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 22:47:25,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:47:28,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:47:28,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:47:28,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:47:28,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:47:28,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:47:28,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:47:28,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:47:28,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:47:28,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:47:28,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:47:28,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:47:28,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:47:28,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:47:28,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:47:28,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:47:28,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:47:28,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:47:29,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:47:29,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:47:29,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:47:29,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:47:29,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:47:29,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:47:29,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:47:29,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:47:29,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:47:29,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:47:29,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:47:29,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:47:29,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:47:29,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:47:29,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:47:29,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:47:29,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:47:29,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:47:29,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:47:29,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:47:29,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:47:29,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:47:29,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:47:29,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 22:47:29,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:47:29,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:47:29,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:47:29,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:47:29,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:47:29,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:47:29,126 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:47:29,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:47:29,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:47:29,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:47:29,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:47:29,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:47:29,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:47:29,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:47:29,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 22:47:29,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 22:47:29,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:47:29,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:47:29,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:47:29,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:47:29,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:47:29,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:47:29,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:47:29,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:47:29,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:47:29,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:47:29,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:47:29,134 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 22:47:29,134 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 22:47:29,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:47:29,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:47:29,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:47:29,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:47:29,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 22:47:29,135 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_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9a8145d638c26faad449bc885374edad64539bf6398d69edd43d752cc31d73 [2021-10-28 22:47:29,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:47:29,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:47:29,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:47:29,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:47:29,681 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:47:29,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-10-28 22:47:29,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/96c196602/1d189cae16714ec7a5c45584ee30c1f0/FLAG49a1de7f2 [2021-10-28 22:47:30,458 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:47:30,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c [2021-10-28 22:47:30,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/96c196602/1d189cae16714ec7a5c45584ee30c1f0/FLAG49a1de7f2 [2021-10-28 22:47:30,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/data/96c196602/1d189cae16714ec7a5c45584ee30c1f0 [2021-10-28 22:47:30,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:47:30,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:47:30,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:47:30,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:47:30,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:47:30,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:47:30" (1/1) ... [2021-10-28 22:47:30,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6d947a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:30, skipping insertion in model container [2021-10-28 22:47:30,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:47:30" (1/1) ... [2021-10-28 22:47:30,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:47:30,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:47:31,301 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-10-28 22:47:31,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:47:31,342 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:47:31,422 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/sv-benchmarks/c/float-newlib/double_req_bl_0660a.c[6214,6227] [2021-10-28 22:47:31,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:47:31,459 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:47:31,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31 WrapperNode [2021-10-28 22:47:31,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:47:31,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:47:31,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:47:31,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:47:31,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:47:31,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:47:31,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:47:31,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:47:31,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:47:31,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:47:31,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:47:31,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:47:31,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (1/1) ... [2021-10-28 22:47:31,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:47:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:47:31,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:47:31,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:47:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-28 22:47:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-28 22:47:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 22:47:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:47:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-28 22:47:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 22:47:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:47:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:47:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 22:47:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:48:15,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:48:15,195 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-28 22:48:15,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:15 BoogieIcfgContainer [2021-10-28 22:48:15,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:48:15,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:48:15,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:48:15,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:48:15,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:47:30" (1/3) ... [2021-10-28 22:48:15,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3990eecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:15, skipping insertion in model container [2021-10-28 22:48:15,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:47:31" (2/3) ... [2021-10-28 22:48:15,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3990eecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:15, skipping insertion in model container [2021-10-28 22:48:15,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:15" (3/3) ... [2021-10-28 22:48:15,241 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660a.c [2021-10-28 22:48:15,246 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:48:15,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 22:48:15,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:48:15,322 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:48:15,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 22:48:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 22:48:15,350 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:15,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:15,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:48:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:15,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2021-10-28 22:48:15,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:15,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324886212] [2021-10-28 22:48:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:15,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:15,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:15,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:15,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 22:48:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:15,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 22:48:15,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:16,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:16,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:48:16,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324886212] [2021-10-28 22:48:16,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324886212] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:16,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:16,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 22:48:16,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697727242] [2021-10-28 22:48:16,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 22:48:16,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:48:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 22:48:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:48:16,537 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:48:16,595 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2021-10-28 22:48:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:48:16,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 22:48:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:48:16,615 INFO L225 Difference]: With dead ends: 227 [2021-10-28 22:48:16,615 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 22:48:16,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:48:16,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 22:48:16,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-28 22:48:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 110 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2021-10-28 22:48:16,667 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2021-10-28 22:48:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:48:16,667 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2021-10-28 22:48:16,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2021-10-28 22:48:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 22:48:16,669 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:48:16,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:16,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:16,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:48:16,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:48:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2021-10-28 22:48:16,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:48:16,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395623498] [2021-10-28 22:48:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:16,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:48:16,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:48:16,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:48:16,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 22:48:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:17,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 22:48:17,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:18,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2021-10-28 22:48:21,373 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 22:48:21,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2021-10-28 22:48:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:23,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:48:47,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2021-10-28 22:49:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:09,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:49:09,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395623498] [2021-10-28 22:49:09,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395623498] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:09,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:09,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-28 22:49:09,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105340162] [2021-10-28 22:49:09,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:49:09,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:49:09,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:49:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=132, Unknown=19, NotChecked=0, Total=182 [2021-10-28 22:49:09,090 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:33,410 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= c_ULTIMATE.start___ieee754_atan2_~y .cse0) (forall ((|v_skolemized_q#valueAsBitvector_32| (_ BitVec 64))) (or (and (not (bvugt (bvor c_ULTIMATE.start___ieee754_atan2_~ix~1 (bvlshr (bvor c_ULTIMATE.start___ieee754_atan2_~lx~0 (bvneg c_ULTIMATE.start___ieee754_atan2_~lx~0)) (_ bv31 32))) (_ bv2146435072 32))) (forall ((ULTIMATE.start___ieee754_atan2_~ly~0 (_ BitVec 32))) (not (bvugt (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_32|)) (bvlshr (bvor ULTIMATE.start___ieee754_atan2_~ly~0 (bvneg ULTIMATE.start___ieee754_atan2_~ly~0)) (_ bv31 32))) (_ bv2146435072 32))))) (not (= c_ULTIMATE.start___ieee754_atan2_~y (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_32|)))))) (fp.lt c_ULTIMATE.start___ieee754_atan2_~x (_ +zero 11 53)) (exists ((|v_skolemized_q#valueAsBitvector_32| (_ BitVec 64))) (and (= c_ULTIMATE.start___ieee754_atan2_~hy~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_32|)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_32|)) (fp.neg (_ +zero 11 53))))) (exists ((|v_skolemized_q#valueAsBitvector_31| (_ BitVec 64))) (and (= (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_31|)) c_ULTIMATE.start___ieee754_atan2_~ix~1) (= c_ULTIMATE.start___ieee754_atan2_~lx~0 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_31|)) (fp.lt (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_31|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_31|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_31|)) (_ +zero 11 53)))) (= c_ULTIMATE.start_main_~y~0 .cse0) (forall ((|v_skolemized_q#valueAsBitvector_32| (_ BitVec 64))) (or (not (= c_ULTIMATE.start___ieee754_atan2_~y (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_32|)))) (and (not (bvugt (bvor (bvand (_ bv2147483647 32) c_ULTIMATE.start___ieee754_atan2_~hx~1) (bvlshr (bvor c_ULTIMATE.start___ieee754_atan2_~lx~0 (bvneg c_ULTIMATE.start___ieee754_atan2_~lx~0)) (_ bv31 32))) (_ bv2146435072 32))) (forall ((ULTIMATE.start___ieee754_atan2_~ly~0 (_ BitVec 32))) (not (bvugt (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_32|)) (bvlshr (bvor ULTIMATE.start___ieee754_atan2_~ly~0 (bvneg ULTIMATE.start___ieee754_atan2_~ly~0)) (_ bv31 32))) (_ bv2146435072 32))))))))) is different from false [2021-10-28 22:49:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:56,593 INFO L93 Difference]: Finished difference Result 161 states and 226 transitions. [2021-10-28 22:49:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:49:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 22:49:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:56,676 INFO L225 Difference]: With dead ends: 161 [2021-10-28 22:49:56,676 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 22:49:56,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 67.4s TimeCoverageRelationStatistics Valid=66, Invalid=214, Unknown=30, NotChecked=32, Total=342 [2021-10-28 22:49:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 22:49:56,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-28 22:49:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions. [2021-10-28 22:49:56,694 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 13 [2021-10-28 22:49:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:56,695 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions. [2021-10-28 22:49:56,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions. [2021-10-28 22:49:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:49:56,697 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:56,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:56,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:49:56,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:49:56,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:49:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1171723193, now seen corresponding path program 1 times [2021-10-28 22:49:56,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:49:56,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167573612] [2021-10-28 22:49:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:56,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:49:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:49:56,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:49:56,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 22:49:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:57,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:49:57,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:49:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:59,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:50:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:04,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:50:04,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167573612] [2021-10-28 22:50:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167573612] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:04,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:04,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 22:50:04,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607080092] [2021-10-28 22:50:04,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:50:04,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:50:04,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:50:04,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:50:04,190 INFO L87 Difference]: Start difference. First operand 102 states and 140 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:09,667 INFO L93 Difference]: Finished difference Result 169 states and 230 transitions. [2021-10-28 22:50:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:50:09,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 22:50:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:09,679 INFO L225 Difference]: With dead ends: 169 [2021-10-28 22:50:09,679 INFO L226 Difference]: Without dead ends: 106 [2021-10-28 22:50:09,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:50:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-28 22:50:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2021-10-28 22:50:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.3663366336633664) internal successors, (138), 101 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 138 transitions. [2021-10-28 22:50:09,702 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 138 transitions. Word has length 18 [2021-10-28 22:50:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:09,703 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 138 transitions. [2021-10-28 22:50:09,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 138 transitions. [2021-10-28 22:50:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:50:09,705 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:09,705 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:09,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:09,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:50:09,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:50:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1114464891, now seen corresponding path program 1 times [2021-10-28 22:50:09,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:50:09,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734791364] [2021-10-28 22:50:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:09,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:50:09,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:50:09,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:50:09,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 22:50:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:10,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:50:10,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:13,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:50:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:20,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:50:20,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734791364] [2021-10-28 22:50:20,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734791364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:20,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:20,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 22:50:20,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904054882] [2021-10-28 22:50:20,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:50:20,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:50:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:50:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2021-10-28 22:50:20,134 INFO L87 Difference]: Start difference. First operand 102 states and 138 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:29,372 INFO L93 Difference]: Finished difference Result 121 states and 159 transitions. [2021-10-28 22:50:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:50:29,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 22:50:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:29,376 INFO L225 Difference]: With dead ends: 121 [2021-10-28 22:50:29,376 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 22:50:29,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=55, Invalid=126, Unknown=1, NotChecked=0, Total=182 [2021-10-28 22:50:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 22:50:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 22:50:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2021-10-28 22:50:29,400 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 18 [2021-10-28 22:50:29,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:29,400 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2021-10-28 22:50:29,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:29,401 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2021-10-28 22:50:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:50:29,402 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:29,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:29,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:29,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:50:29,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:50:29,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash -960415812, now seen corresponding path program 1 times [2021-10-28 22:50:29,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:50:29,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342689776] [2021-10-28 22:50:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:29,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:50:29,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:50:29,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:50:29,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 22:50:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:30,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:50:30,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:32,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:50:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:37,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:50:37,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342689776] [2021-10-28 22:50:37,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342689776] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:37,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:37,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 22:50:37,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266403653] [2021-10-28 22:50:37,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:50:37,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:50:37,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:50:37,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:50:37,759 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:43,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:43,253 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2021-10-28 22:50:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:50:43,255 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 22:50:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:43,257 INFO L225 Difference]: With dead ends: 80 [2021-10-28 22:50:43,257 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 22:50:43,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:50:43,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 22:50:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-28 22:50:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2933333333333332) internal successors, (97), 75 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2021-10-28 22:50:43,289 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 19 [2021-10-28 22:50:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:43,290 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2021-10-28 22:50:43,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:43,295 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2021-10-28 22:50:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 22:50:43,299 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:43,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:43,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:43,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:50:43,510 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:50:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:43,510 INFO L85 PathProgramCache]: Analyzing trace with hash 286843778, now seen corresponding path program 1 times [2021-10-28 22:50:43,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:50:43,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626542705] [2021-10-28 22:50:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:43,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:50:43,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:50:43,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:50:43,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 22:50:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:43,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:50:43,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:49,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:50:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:56,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:50:56,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626542705] [2021-10-28 22:50:56,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626542705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:56,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:56,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 22:50:56,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421055941] [2021-10-28 22:50:56,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:50:56,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:50:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:50:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=81, Unknown=2, NotChecked=0, Total=110 [2021-10-28 22:50:56,035 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:51:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:51:05,119 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2021-10-28 22:51:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:51:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 22:51:05,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:51:05,122 INFO L225 Difference]: With dead ends: 95 [2021-10-28 22:51:05,122 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 22:51:05,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=55, Invalid=125, Unknown=2, NotChecked=0, Total=182 [2021-10-28 22:51:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 22:51:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 22:51:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:51:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-10-28 22:51:05,153 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 20 [2021-10-28 22:51:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:51:05,154 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-10-28 22:51:05,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:51:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-10-28 22:51:05,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 22:51:05,156 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:51:05,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:51:05,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:51:05,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:51:05,362 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:51:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:51:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1774047840, now seen corresponding path program 1 times [2021-10-28 22:51:05,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:51:05,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266030291] [2021-10-28 22:51:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:51:05,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:51:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:51:05,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:51:05,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 22:51:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:51:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:51:05,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:51:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:51:10,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:51:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:51:19,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:51:19,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266030291] [2021-10-28 22:51:19,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266030291] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:51:19,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:51:19,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 22:51:19,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596219445] [2021-10-28 22:51:19,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:51:19,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:51:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:51:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:51:19,276 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:13,732 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2021-10-28 22:52:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:52:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 22:52:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:52:13,768 INFO L225 Difference]: With dead ends: 95 [2021-10-28 22:52:13,768 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 22:52:13,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:52:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 22:52:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 22:52:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 75 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2021-10-28 22:52:13,779 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 20 [2021-10-28 22:52:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:52:13,780 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2021-10-28 22:52:13,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2021-10-28 22:52:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 22:52:13,781 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:52:13,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:13,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:13,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:52:13,993 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:52:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1297758981, now seen corresponding path program 1 times [2021-10-28 22:52:13,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:52:13,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459246997] [2021-10-28 22:52:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:13,995 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:52:13,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:52:13,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:52:13,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 22:52:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:14,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:52:14,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:19,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:52:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:25,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:52:25,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459246997] [2021-10-28 22:52:25,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459246997] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:25,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:25,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-28 22:52:25,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117791980] [2021-10-28 22:52:25,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:52:25,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:52:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:52:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:52:25,221 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:32,298 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2021-10-28 22:52:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:52:32,530 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 22:52:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:52:32,531 INFO L225 Difference]: With dead ends: 106 [2021-10-28 22:52:32,531 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 22:52:32,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:52:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 22:52:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-28 22:52:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-10-28 22:52:32,542 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 21 [2021-10-28 22:52:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:52:32,542 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-10-28 22:52:32,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-10-28 22:52:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 22:52:32,544 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:52:32,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:32,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:32,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:52:32,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:52:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash -804510387, now seen corresponding path program 1 times [2021-10-28 22:52:32,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:52:32,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17294043] [2021-10-28 22:52:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:32,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:52:32,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:52:32,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:52:32,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 22:52:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:33,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:52:33,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:36,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:52:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:42,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:52:42,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17294043] [2021-10-28 22:52:42,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17294043] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:42,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:42,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 22:52:42,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408909640] [2021-10-28 22:52:42,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:52:42,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:52:42,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:52:42,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:52:42,453 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:48,580 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2021-10-28 22:52:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:52:48,582 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 22:52:48,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:52:48,583 INFO L225 Difference]: With dead ends: 80 [2021-10-28 22:52:48,584 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 22:52:48,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:52:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 22:52:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-28 22:52:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 75 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2021-10-28 22:52:48,595 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 22 [2021-10-28 22:52:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:52:48,596 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2021-10-28 22:52:48,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2021-10-28 22:52:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 22:52:48,598 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:52:48,598 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:48,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:48,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:52:48,814 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:52:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash 111855477, now seen corresponding path program 1 times [2021-10-28 22:52:48,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:52:48,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562203074] [2021-10-28 22:52:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:48,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:52:48,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:52:48,817 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:52:48,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 22:52:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:49,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:52:49,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:56,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:39,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:39,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562203074] [2021-10-28 22:53:39,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562203074] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:39,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:39,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 22:53:39,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023893344] [2021-10-28 22:53:39,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:53:39,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:39,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:53:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=64, Unknown=3, NotChecked=0, Total=90 [2021-10-28 22:53:39,582 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:42,777 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2021-10-28 22:55:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:55:42,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 22:55:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:42,790 INFO L225 Difference]: With dead ends: 99 [2021-10-28 22:55:42,790 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 22:55:42,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=42, Invalid=87, Unknown=3, NotChecked=0, Total=132 [2021-10-28 22:55:42,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 22:55:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2021-10-28 22:55:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-10-28 22:55:42,801 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 25 [2021-10-28 22:55:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:42,801 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-10-28 22:55:42,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-10-28 22:55:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 22:55:42,803 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:42,803 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:42,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-28 22:55:43,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:55:43,007 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:55:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -825662492, now seen corresponding path program 1 times [2021-10-28 22:55:43,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:55:43,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742781849] [2021-10-28 22:55:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:43,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:55:43,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:55:43,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:55:43,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 22:55:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:43,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:55:43,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:43,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:55:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:44,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:55:44,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742781849] [2021-10-28 22:55:44,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742781849] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:44,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:44,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 22:55:44,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660941] [2021-10-28 22:55:44,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:55:44,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:55:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:55:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:55:44,075 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:45,548 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2021-10-28 22:55:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:55:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 22:55:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:45,586 INFO L225 Difference]: With dead ends: 85 [2021-10-28 22:55:45,586 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 22:55:45,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:55:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 22:55:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 22:55:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 77 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-10-28 22:55:45,594 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 26 [2021-10-28 22:55:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:45,595 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-10-28 22:55:45,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-10-28 22:55:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 22:55:45,596 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:45,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:45,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-28 22:55:45,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:55:45,798 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:55:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1286513403, now seen corresponding path program 1 times [2021-10-28 22:55:45,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:55:45,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059373043] [2021-10-28 22:55:45,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:45,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:55:45,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:55:45,800 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:55:45,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 22:55:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:46,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 22:55:46,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:52,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:55:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:56,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:55:56,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059373043] [2021-10-28 22:55:56,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059373043] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:56,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:56,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 12 [2021-10-28 22:55:56,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114843910] [2021-10-28 22:55:56,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:55:56,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:55:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:55:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:55:56,060 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:05,518 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2021-10-28 22:56:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:56:05,547 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-28 22:56:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:05,548 INFO L225 Difference]: With dead ends: 87 [2021-10-28 22:56:05,548 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 22:56:05,549 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-28 22:56:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 22:56:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-28 22:56:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2021-10-28 22:56:05,558 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 28 [2021-10-28 22:56:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:05,558 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2021-10-28 22:56:05,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2021-10-28 22:56:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 22:56:05,560 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:05,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:05,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-28 22:56:05,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:56:05,766 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:56:05,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:05,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1125012315, now seen corresponding path program 1 times [2021-10-28 22:56:05,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:56:05,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916270145] [2021-10-28 22:56:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:05,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:56:05,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:56:05,771 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:56:05,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 22:56:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:07,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 22:56:07,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:15,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2021-10-28 22:56:22,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 22:56:22,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 35 [2021-10-28 22:57:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:57:37,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:58:38,601 WARN L838 $PredicateComparison]: unable to prove that (fp.eq (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode |c_ULTIMATE.start_atan_double_#res| c_~pi_lo_atan2~0) c_~pi~0) (fp.neg c_~pi~0)) is different from false [2021-10-28 22:59:02,175 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 22:59:02,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 22:59:02,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:59:02,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916270145] [2021-10-28 22:59:02,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 22:59:02,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1776632017] [2021-10-28 22:59:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:02,179 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 22:59:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-28 22:59:02,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 22:59:02,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-28 22:59:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:59:06,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@405ab19b [2021-10-28 22:59:06,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039933055] [2021-10-28 22:59:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:06,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:59:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:59:06,798 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:59:06,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 22:59:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:59:08,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:59:08,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@405ab19b [2021-10-28 22:59:08,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:59:08,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 22:59:08,115 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 22:59:08,115 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 22:59:08,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:08,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:59:08,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-28 22:59:08,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:59:08,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eff71c9-4ac9-4f7e-930c-7fae08294173/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:59:08,737 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:08,740 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:59:08,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:59:08 BoogieIcfgContainer [2021-10-28 22:59:08,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:59:08,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:59:08,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:59:08,773 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:59:08,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:15" (3/4) ... [2021-10-28 22:59:08,779 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:59:08,779 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:59:08,780 INFO L168 Benchmark]: Toolchain (without parser) took 697995.22 ms. Allocated memory is still 71.3 MB. Free memory was 51.2 MB in the beginning and 32.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:08,780 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 35.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:59:08,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.74 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:08,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.34 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 45.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:08,782 INFO L168 Benchmark]: Boogie Preprocessor took 143.04 ms. Allocated memory is still 71.3 MB. Free memory was 45.2 MB in the beginning and 41.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:08,782 INFO L168 Benchmark]: RCFGBuilder took 43477.57 ms. Allocated memory is still 71.3 MB. Free memory was 41.8 MB in the beginning and 27.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:08,783 INFO L168 Benchmark]: TraceAbstraction took 653557.26 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 32.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:08,783 INFO L168 Benchmark]: Witness Printer took 6.09 ms. Allocated memory is still 71.3 MB. Free memory was 32.7 MB in the beginning and 32.2 MB in the end (delta: 498.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:59:08,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 35.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 671.74 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.34 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 45.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 143.04 ms. Allocated memory is still 71.3 MB. Free memory was 45.2 MB in the beginning and 41.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 43477.57 ms. Allocated memory is still 71.3 MB. Free memory was 41.8 MB in the beginning and 27.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 653557.26 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 32.7 MB in the end (delta: 18.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 6.09 ms. Allocated memory is still 71.3 MB. Free memory was 32.7 MB in the beginning and 32.2 MB in the end (delta: 498.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 261]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L252] double x = __VERIFIER_nondet_double(); [L253] double y = -0.0; [L255] COND TRUE x < 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND FALSE !(((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000)) [L166] COND FALSE !(((hx - 0x3ff00000) | lx) == 0) [L168] m = ((hy >> 31) & 1) | ((hx >> 30) & 2) [L170] COND FALSE !((iy | ly) == 0) [L182] COND FALSE !((ix | lx) == 0) [L185] COND FALSE !(ix == 0x7ff00000) [L211] COND FALSE !(iy == 0x7ff00000) [L214] k = (iy - ix) >> 20 [L215] COND FALSE !(k > 60) [L217] COND FALSE !(hx < 0 && k < -60) [L20] __uint32_t high; [L22] ieee_double_shape_type gh_u; [L23] gh_u.value = (x) [L24] EXPR gh_u.parts.msw [L24] (high) = gh_u.parts.msw [L27] ieee_double_shape_type sh_u; [L28] sh_u.value = (x) [L29] sh_u.parts.msw = (high & 0x7fffffff) [L30] EXPR sh_u.value [L30] (x) = sh_u.value [L32] return x; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff [L76] COND FALSE !(ix >= 0x44100000) [L90] COND TRUE ix < 0x3fdc0000 [L91] COND TRUE ix < 0x3e200000 [L92] COND TRUE huge_atan + x > one_atan [L93] return x; [L220] z = atan_double(fabs_double(y / x)) [L222] case 0: [L224] case 1: [L239] case 2: [L241] default: [L242] return (z - pi_lo_atan2) - pi; [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != -pi [L261] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 653.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 279.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1136 SDtfs, 3063 SDslu, 3734 SDs, 0 SdLazy, 612 SolverSat, 95 SolverUnsat, 59 SolverUnknown, 0 SolverNotchecked, 220.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 495 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 161.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 78 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 357.2s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 496 ConstructedInterpolants, 151 QuantifiedInterpolants, 6202 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1919 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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...