./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b ............................................................................................................................................................................................................................................................... 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_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:08:04,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:08:04,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:08:04,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:08:04,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:08:04,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:08:04,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:08:04,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:08:04,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:08:04,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:08:04,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:08:04,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:08:04,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:08:04,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:08:04,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:08:04,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:08:04,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:08:04,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:08:04,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:08:04,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:08:04,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:08:04,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:08:04,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:08:04,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:08:04,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:08:04,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:08:04,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:08:04,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:08:04,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:08:04,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:08:04,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:08:04,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:08:04,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:08:04,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:08:04,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:08:04,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:08:04,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:08:04,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:08:04,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:08:04,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:08:04,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:08:04,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:08:04,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:08:04,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:08:04,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:08:04,853 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:08:04,854 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:08:04,854 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:08:04,854 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:08:04,854 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:08:04,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:08:04,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:08:04,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:08:04,856 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:08:04,856 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:08:04,856 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:08:04,857 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:08:04,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:08:04,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:08:04,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:08:04,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:08:04,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:08:04,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:08:04,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:08:04,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:08:04,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:08:04,860 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:08:04,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:08:04,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:08:04,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:08:04,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:08:04,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:08:04,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:08:04,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:08:04,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:08:04,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:08:04,864 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:08:04,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:08:04,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:08:04,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:08:04,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:08:04,865 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b [2021-10-13 07:08:05,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:08:05,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:08:05,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:08:05,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:08:05,270 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:08:05,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-13 07:08:05,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/3e50c0086/cb7a538dadf340d6adb3aaf2fbfbbb8e/FLAG8ac69ff3b [2021-10-13 07:08:05,879 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:08:05,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-13 07:08:05,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/3e50c0086/cb7a538dadf340d6adb3aaf2fbfbbb8e/FLAG8ac69ff3b [2021-10-13 07:08:06,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/3e50c0086/cb7a538dadf340d6adb3aaf2fbfbbb8e [2021-10-13 07:08:06,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:08:06,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:08:06,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:08:06,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:08:06,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:08:06,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f1ea13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06, skipping insertion in model container [2021-10-13 07:08:06,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:08:06,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:08:06,523 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_71ea50be-bdf4-4afe-8c9f-8f278a198065/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-13 07:08:06,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:08:06,549 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:08:06,564 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_71ea50be-bdf4-4afe-8c9f-8f278a198065/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-13 07:08:06,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:08:06,591 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:08:06,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06 WrapperNode [2021-10-13 07:08:06,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:08:06,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:08:06,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:08:06,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:08:06,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:08:06,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:08:06,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:08:06,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:08:06,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:08:06,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:08:06,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:08:06,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:08:06,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (1/1) ... [2021-10-13 07:08:06,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:08:06,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:08:06,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:08:06,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:08:06,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:08:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:08:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 07:08:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:08:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 07:08:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:08:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:08:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:08:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:08:07,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:08:07,193 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:08:07,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:07 BoogieIcfgContainer [2021-10-13 07:08:07,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:08:07,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:08:07,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:08:07,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:08:07,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:06" (1/3) ... [2021-10-13 07:08:07,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7800908a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:07, skipping insertion in model container [2021-10-13 07:08:07,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:06" (2/3) ... [2021-10-13 07:08:07,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7800908a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:07, skipping insertion in model container [2021-10-13 07:08:07,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:07" (3/3) ... [2021-10-13 07:08:07,208 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-10-13 07:08:07,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:08:07,216 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:08:07,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:08:07,283 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 07:08:07,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:08:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:08:07,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:07,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:08:07,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:08:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:07,314 INFO L82 PathProgramCache]: Analyzing trace with hash 60993, now seen corresponding path program 1 times [2021-10-13 07:08:07,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:07,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504462805] [2021-10-13 07:08:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:07,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:08:07,511 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:08:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:08:07,661 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:08:07,665 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:08:07,666 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:08:07,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:08:07,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:08:07,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:08:07 BoogieIcfgContainer [2021-10-13 07:08:07,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:08:07,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:08:07,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:08:07,726 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:08:07,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:07" (3/4) ... [2021-10-13 07:08:07,735 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:08:07,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:08:07,743 INFO L168 Benchmark]: Toolchain (without parser) took 1482.30 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 51.2 MB in the beginning and 77.8 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:07,744 INFO L168 Benchmark]: CDTParser took 1.21 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:07,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.60 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 82.3 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.21 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 80.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,751 INFO L168 Benchmark]: Boogie Preprocessor took 27.25 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 79.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,752 INFO L168 Benchmark]: RCFGBuilder took 528.29 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 65.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,757 INFO L168 Benchmark]: TraceAbstraction took 515.48 ms. Allocated memory is still 107.0 MB. Free memory was 65.0 MB in the beginning and 78.1 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:07,759 INFO L168 Benchmark]: Witness Printer took 11.94 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 77.8 MB in the end (delta: 248.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:07,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.60 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 82.3 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.21 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 80.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.25 ms. Allocated memory is still 107.0 MB. Free memory was 80.7 MB in the beginning and 79.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 528.29 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 65.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 515.48 ms. Allocated memory is still 107.0 MB. Free memory was 65.0 MB in the beginning and 78.1 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 11.94 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 77.8 MB in the end (delta: 248.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 403.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.2ms SsaConstructionTime, 75.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-10-13 07:08:07,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:08:10,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:08:10,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:08:10,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:08:10,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:08:10,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:08:10,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:08:10,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:08:10,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:08:10,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:08:10,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:08:10,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:08:10,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:08:10,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:08:10,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:08:10,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:08:10,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:08:10,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:08:10,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:08:10,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:08:10,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:08:10,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:08:10,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:08:10,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:08:10,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:08:10,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:08:10,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:08:10,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:08:10,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:08:10,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:08:10,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:08:10,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:08:10,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:08:10,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:08:10,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:08:10,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:08:10,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:08:10,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:08:10,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:08:10,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:08:10,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:08:10,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:08:10,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:08:10,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:08:10,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:08:10,923 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:08:10,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:08:10,924 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:08:10,924 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:08:10,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:08:10,925 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:08:10,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:08:10,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:08:10,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:08:10,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:08:10,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:08:10,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:08:10,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:08:10,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:08:10,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:08:10,930 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:08:10,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:08:10,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:08:10,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:08:10,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:08:10,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:08:10,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:08:10,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:08:10,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:08:10,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:08:10,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:08:10,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:08:10,933 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:08:10,933 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:08:10,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:08:10,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:08:10,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:08:10,935 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_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b [2021-10-13 07:08:11,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:08:11,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:08:11,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:08:11,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:08:11,464 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:08:11,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-13 07:08:11,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/27b22512f/5a98f93ee8e64819bb256fbf2ec573b3/FLAG5ca2aba69 [2021-10-13 07:08:12,180 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:08:12,181 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2021-10-13 07:08:12,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/27b22512f/5a98f93ee8e64819bb256fbf2ec573b3/FLAG5ca2aba69 [2021-10-13 07:08:12,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/data/27b22512f/5a98f93ee8e64819bb256fbf2ec573b3 [2021-10-13 07:08:12,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:08:12,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:08:12,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:08:12,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:08:12,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:08:12,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:12,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ccc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12, skipping insertion in model container [2021-10-13 07:08:12,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:12,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:08:12,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:08:12,760 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_71ea50be-bdf4-4afe-8c9f-8f278a198065/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-13 07:08:12,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:08:12,830 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:08:12,875 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_71ea50be-bdf4-4afe-8c9f-8f278a198065/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c[585,598] [2021-10-13 07:08:12,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:08:12,922 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:08:12,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12 WrapperNode [2021-10-13 07:08:12,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:08:12,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:08:12,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:08:12,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:08:12,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:12,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:12,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:08:12,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:08:12,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:08:12,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:08:13,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:08:13,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:08:13,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:08:13,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:08:13,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (1/1) ... [2021-10-13 07:08:13,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:08:13,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:08:13,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:08:13,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:08:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:08:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:08:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-13 07:08:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:08:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:08:13,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:08:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-13 07:08:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:08:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:08:15,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:08:15,551 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:08:15,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:15 BoogieIcfgContainer [2021-10-13 07:08:15,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:08:15,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:08:15,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:08:15,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:08:15,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:12" (1/3) ... [2021-10-13 07:08:15,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0828a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:15, skipping insertion in model container [2021-10-13 07:08:15,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:12" (2/3) ... [2021-10-13 07:08:15,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0828a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:15, skipping insertion in model container [2021-10-13 07:08:15,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:15" (3/3) ... [2021-10-13 07:08:15,562 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2021-10-13 07:08:15,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:08:15,569 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:08:15,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:08:15,633 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 07:08:15,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:08:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-10-13 07:08:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:08:15,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:15,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:15,653 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:08:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2021-10-13 07:08:15,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:08:15,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700401275] [2021-10-13 07:08:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:15,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:08:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:08:15,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:08:15,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:08:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:16,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:08:16,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:08:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:16,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:08:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:16,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:08:16,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700401275] [2021-10-13 07:08:16,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700401275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:16,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:16,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:08:16,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942015179] [2021-10-13 07:08:16,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:08:16,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:08:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:08:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:08:16,236 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 07:08:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:16,252 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-13 07:08:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:08:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 07:08:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:16,262 INFO L225 Difference]: With dead ends: 21 [2021-10-13 07:08:16,263 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 07:08:16,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:08:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 07:08:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 07:08:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2021-10-13 07:08:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-13 07:08:16,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-13 07:08:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:16,300 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-13 07:08:16,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-13 07:08:16,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-13 07:08:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:08:16,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:16,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:16,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:08:16,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:08:16,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:08:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:16,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2021-10-13 07:08:16,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:08:16,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84606707] [2021-10-13 07:08:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:16,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:08:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:08:16,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:08:16,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:08:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:08:19,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:08:34,577 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 100.0)) (fp.geq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 10.0))) (= (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) .cse0) .cse1) .cse1)))) |c_ULTIMATE.start_InvSqrt_#res|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 07:10:15,518 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (let ((.cse3 (let ((.cse4 (let ((.cse5 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) .cse4) .cse4)))))) (let ((.cse1 (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (.cse2 (fp.geq .cse3 (_ +zero 8 24)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2))) (and .cse1 .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))))))) is different from false [2021-10-13 07:10:17,548 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (let ((.cse3 (let ((.cse4 (let ((.cse5 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) .cse4) .cse4)))))) (let ((.cse1 (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse3) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (.cse2 (fp.geq .cse3 (_ +zero 8 24)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2))) (and .cse1 .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))))))) is different from true [2021-10-13 07:11:06,895 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (let ((.cse0 (let ((.cse1 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse2) .cse1) .cse1)))))) (or (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) is different from false [2021-10-13 07:11:08,926 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (let ((.cse0 (let ((.cse1 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse2) .cse1) .cse1)))))) (or (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (not (fp.geq .cse0 (_ +zero 8 24))))) (fp.geq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) is different from true [2021-10-13 07:11:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:08,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:44,084 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-13 07:11:44,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:11:44,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84606707] [2021-10-13 07:11:44,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/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") [2021-10-13 07:11:44,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1731195310] [2021-10-13 07:11:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:44,087 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:11:44,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:11:44,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:11:44,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-13 07:11:44,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-13 07:11:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:44,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:11:44,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@18fa7858 [2021-10-13 07:11:44,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033111405] [2021-10-13 07:11:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:44,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:11:44,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:11:44,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:11:44,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:12:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:12:25,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:12:25,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@18fa7858 [2021-10-13 07:12:25,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:12:25,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 07:12:25,846 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 07:12:25,846 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 07:12:25,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:25,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:12:26,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 07:12:26,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:12:26,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71ea50be-bdf4-4afe-8c9f-8f278a198065/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:12:26,462 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:12:26,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:12:26 BoogieIcfgContainer [2021-10-13 07:12:26,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:12:26,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:12:26,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:12:26,476 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:12:26,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:15" (3/4) ... [2021-10-13 07:12:26,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:12:26,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:12:26,480 INFO L168 Benchmark]: Toolchain (without parser) took 253939.28 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 35.7 MB in the beginning and 46.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:26,481 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:26,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.52 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 35.5 MB in the beginning and 57.6 MB in the end (delta: -22.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:26,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.44 ms. Allocated memory is still 75.5 MB. Free memory was 57.6 MB in the beginning and 56.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:26,483 INFO L168 Benchmark]: Boogie Preprocessor took 66.46 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 54.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:26,484 INFO L168 Benchmark]: RCFGBuilder took 2487.10 ms. Allocated memory is still 75.5 MB. Free memory was 54.7 MB in the beginning and 44.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:26,484 INFO L168 Benchmark]: TraceAbstraction took 250916.88 ms. Allocated memory is still 75.5 MB. Free memory was 43.8 MB in the beginning and 46.5 MB in the end (delta: -2.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:26,485 INFO L168 Benchmark]: Witness Printer took 6.72 ms. Allocated memory is still 75.5 MB. Free memory was 46.5 MB in the beginning and 46.3 MB in the end (delta: 187.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:26,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.52 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 35.5 MB in the beginning and 57.6 MB in the end (delta: -22.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.44 ms. Allocated memory is still 75.5 MB. Free memory was 57.6 MB in the beginning and 56.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.46 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 54.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2487.10 ms. Allocated memory is still 75.5 MB. Free memory was 54.7 MB in the beginning and 44.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 250916.88 ms. Allocated memory is still 75.5 MB. Free memory was 43.8 MB in the beginning and 46.5 MB in the end (delta: -2.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.72 ms. Allocated memory is still 75.5 MB. Free memory was 46.5 MB in the beginning and 46.3 MB in the end (delta: 187.7 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: 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: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 250834.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 47.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.2ms SsaConstructionTime, 300.7ms SatisfiabilityAnalysisTime, 119.6ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...