./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI --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 83c30cf69d350d7f7844d9a61780744d2d19365f ........................................................................................................................................................................................................................................................................................................... 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_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI --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 83c30cf69d350d7f7844d9a61780744d2d19365f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:49,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:49,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:49,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:49,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:49,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:49,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:49,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:49,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:49,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:49,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:49,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:49,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:49,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:49,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:49,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:49,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:49,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:49,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:49,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:49,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:49,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:49,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:49,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:49,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:49,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:49,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:49,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:49,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:49,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:49,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:49,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:49,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:49,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:49,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:49,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:49,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:49,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:49,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:49,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:49,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:49,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:49,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:49,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:49,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:49,406 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:49,406 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:49,406 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:49,407 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:49,407 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:49,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:49,414 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:49,415 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:49,416 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:49,416 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:49,416 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:49,416 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:49,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:49,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:49,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:49,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:49,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:49,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:49,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:49,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:49,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:49,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:49,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:49,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:49,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:49,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:49,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:49,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:49,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:49,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:49,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:49,425 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:49,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:49,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:49,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:49,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:49,426 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_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2021-10-11 02:31:49,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:49,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:49,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:49,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:49,814 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:49,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-11 02:31:49,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/74b2b0f58/6280f55338cc405db37aad809bc26cef/FLAG0ea8db481 [2021-10-11 02:31:50,431 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:50,433 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-11 02:31:50,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/74b2b0f58/6280f55338cc405db37aad809bc26cef/FLAG0ea8db481 [2021-10-11 02:31:50,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/74b2b0f58/6280f55338cc405db37aad809bc26cef [2021-10-11 02:31:50,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:50,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:50,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:50,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:50,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:50,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:50" (1/1) ... [2021-10-11 02:31:50,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcd1d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:50, skipping insertion in model container [2021-10-11 02:31:50,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:50" (1/1) ... [2021-10-11 02:31:50,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:50,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:51,067 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-11 02:31:51,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:51,082 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:51,124 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-11 02:31:51,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:51,140 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:51,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51 WrapperNode [2021-10-11 02:31:51,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:51,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:51,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:51,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:51,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:51,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:51,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:51,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:51,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... [2021-10-11 02:31:51,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:51,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:51,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:51,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:51,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 02:31:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:31:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:31:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:51,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:31:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:31:52,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:52,313 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:31:52,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:52 BoogieIcfgContainer [2021-10-11 02:31:52,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:52,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:52,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:52,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:52,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:50" (1/3) ... [2021-10-11 02:31:52,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fef5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:52, skipping insertion in model container [2021-10-11 02:31:52,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:51" (2/3) ... [2021-10-11 02:31:52,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fef5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:52, skipping insertion in model container [2021-10-11 02:31:52,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:52" (3/3) ... [2021-10-11 02:31:52,326 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-11 02:31:52,340 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:52,344 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:52,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:52,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:52,378 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:52,378 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:52,378 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:52,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:52,378 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:52,378 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:52,378 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-10-11 02:31:52,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:31:52,394 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:52,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,402 INFO L82 PathProgramCache]: Analyzing trace with hash -323894289, now seen corresponding path program 1 times [2021-10-11 02:31:52,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:52,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556009324] [2021-10-11 02:31:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:52,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556009324] [2021-10-11 02:31:52,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:52,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:52,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013955769] [2021-10-11 02:31:52,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:31:52,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:52,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:31:52,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:52,611 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2021-10-11 02:31:52,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:52,638 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2021-10-11 02:31:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:31:52,640 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 02:31:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:52,657 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:31:52,657 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:31:52,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:31:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:31:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 02:31:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:31:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2021-10-11 02:31:52,702 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2021-10-11 02:31:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:52,703 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-10-11 02:31:52,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:31:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2021-10-11 02:31:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:31:52,704 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:52,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:52,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:52,704 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:52,708 INFO L82 PathProgramCache]: Analyzing trace with hash 572312428, now seen corresponding path program 1 times [2021-10-11 02:31:52,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:52,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585214014] [2021-10-11 02:31:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:31:52,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:31:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:31:52,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:31:52,863 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:31:52,863 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:31:52,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:31:52,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:52 BoogieIcfgContainer [2021-10-11 02:31:52,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:52,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:52,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:52,909 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:52,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:52" (3/4) ... [2021-10-11 02:31:52,914 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:31:52,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:52,918 INFO L168 Benchmark]: Toolchain (without parser) took 2151.67 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 47.1 MB in the beginning and 78.2 MB in the end (delta: -31.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:52,919 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 63.3 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:52,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.51 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 46.9 MB in the beginning and 105.0 MB in the end (delta: -58.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:52,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.13 ms. Allocated memory is still 132.1 MB. Free memory was 105.0 MB in the beginning and 102.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:52,924 INFO L168 Benchmark]: Boogie Preprocessor took 41.46 ms. Allocated memory is still 132.1 MB. Free memory was 102.9 MB in the beginning and 100.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:52,926 INFO L168 Benchmark]: RCFGBuilder took 1078.16 ms. Allocated memory is still 132.1 MB. Free memory was 100.8 MB in the beginning and 101.3 MB in the end (delta: -450.6 kB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:52,927 INFO L168 Benchmark]: TraceAbstraction took 590.31 ms. Allocated memory is still 132.1 MB. Free memory was 100.5 MB in the beginning and 78.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:52,929 INFO L168 Benchmark]: Witness Printer took 6.83 ms. Allocated memory is still 132.1 MB. Free memory is still 78.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:52,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 63.3 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.51 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 46.9 MB in the beginning and 105.0 MB in the end (delta: -58.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.13 ms. Allocated memory is still 132.1 MB. Free memory was 105.0 MB in the beginning and 102.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.46 ms. Allocated memory is still 132.1 MB. Free memory was 102.9 MB in the beginning and 100.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1078.16 ms. Allocated memory is still 132.1 MB. Free memory was 100.8 MB in the beginning and 101.3 MB in the end (delta: -450.6 kB). Peak memory consumption was 62.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 590.31 ms. Allocated memory is still 132.1 MB. Free memory was 100.5 MB in the beginning and 78.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.83 ms. Allocated memory is still 132.1 MB. Free memory is still 78.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:55,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:55,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:55,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:55,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:55,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:55,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:55,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:55,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:55,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:55,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:55,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:55,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:55,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:55,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:55,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:55,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:55,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:55,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:55,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:55,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:55,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:55,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:55,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:55,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:55,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:55,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:55,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:55,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:55,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:55,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:55,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:55,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:55,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:55,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:55,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:55,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:55,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:55,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:55,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:55,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:55,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:31:55,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:55,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:55,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:55,723 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:55,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:55,723 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:55,723 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:55,724 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:55,724 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:55,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:55,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:55,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:55,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:55,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:55,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:55,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:55,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:55,728 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:31:55,729 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:31:55,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:55,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:55,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:55,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:55,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:55,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:31:55,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:55,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:55,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:55,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:55,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:55,731 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:31:55,732 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:31:55,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:55,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:55,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:55,733 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_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c30cf69d350d7f7844d9a61780744d2d19365f [2021-10-11 02:31:56,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:56,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:56,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:56,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:56,170 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:56,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-11 02:31:56,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/e3b9e5ed7/f35e956ebfe6473ebae12279666e6483/FLAGf796e6e1b [2021-10-11 02:31:56,806 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:56,806 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-11 02:31:56,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/e3b9e5ed7/f35e956ebfe6473ebae12279666e6483/FLAGf796e6e1b [2021-10-11 02:31:57,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/data/e3b9e5ed7/f35e956ebfe6473ebae12279666e6483 [2021-10-11 02:31:57,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:57,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:57,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:57,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:57,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:57,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f56ef7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57, skipping insertion in model container [2021-10-11 02:31:57,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:57,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:57,473 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-11 02:31:57,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:57,501 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:57,580 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-11 02:31:57,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:57,606 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:57,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57 WrapperNode [2021-10-11 02:31:57,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:57,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:57,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:57,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:57,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:57,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:57,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:57,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:57,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:57,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:57,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:57,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:57,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-11 02:31:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-11 02:31:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:31:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:31:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:57,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:31:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:32:03,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:03,744 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:32:03,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:03 BoogieIcfgContainer [2021-10-11 02:32:03,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:03,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:03,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:03,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:03,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:57" (1/3) ... [2021-10-11 02:32:03,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c57c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:03, skipping insertion in model container [2021-10-11 02:32:03,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57" (2/3) ... [2021-10-11 02:32:03,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c57c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:03, skipping insertion in model container [2021-10-11 02:32:03,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:03" (3/3) ... [2021-10-11 02:32:03,760 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-11 02:32:03,775 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:03,779 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:32:03,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:32:03,830 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:03,830 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:03,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:03,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:03,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:03,831 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:03,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:03,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-10-11 02:32:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:03,851 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:03,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:03,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-11 02:32:03,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:03,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398662532] [2021-10-11 02:32:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:04,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:32:04,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:04,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:04,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398662532] [2021-10-11 02:32:04,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:04,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:04,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915417763] [2021-10-11 02:32:04,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:32:04,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:32:04,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:32:04,505 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2021-10-11 02:32:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:04,526 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-10-11 02:32:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:32:04,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:32:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:04,537 INFO L225 Difference]: With dead ends: 104 [2021-10-11 02:32:04,538 INFO L226 Difference]: Without dead ends: 50 [2021-10-11 02:32:04,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:32:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-11 02:32:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-11 02:32:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 02:32:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-10-11 02:32:04,577 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-10-11 02:32:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:04,577 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-10-11 02:32:04,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:32:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-10-11 02:32:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:32:04,579 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:04,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:04,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:32:04,802 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:04,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:04,803 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-11 02:32:04,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:04,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472501135] [2021-10-11 02:32:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:05,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:32:05,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:05,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:05,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472501135] [2021-10-11 02:32:05,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:05,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:05,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559540230] [2021-10-11 02:32:05,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:05,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:05,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:05,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:05,420 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 4 states. [2021-10-11 02:32:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:06,847 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2021-10-11 02:32:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:06,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:32:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:06,851 INFO L225 Difference]: With dead ends: 104 [2021-10-11 02:32:06,851 INFO L226 Difference]: Without dead ends: 62 [2021-10-11 02:32:06,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-11 02:32:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2021-10-11 02:32:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:32:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2021-10-11 02:32:06,861 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2021-10-11 02:32:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:06,861 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-10-11 02:32:06,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2021-10-11 02:32:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:32:06,862 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:06,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:07,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:32:07,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2021-10-11 02:32:07,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:07,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980084627] [2021-10-11 02:32:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:07,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:32:07,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:07,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:07,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980084627] [2021-10-11 02:32:07,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:07,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:07,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461806050] [2021-10-11 02:32:07,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:07,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:07,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:07,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:07,314 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 5 states. [2021-10-11 02:32:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:07,624 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2021-10-11 02:32:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:32:07,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:32:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:07,636 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:32:07,636 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:32:07,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:32:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-10-11 02:32:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:32:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2021-10-11 02:32:07,647 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2021-10-11 02:32:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:07,647 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2021-10-11 02:32:07,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:07,648 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2021-10-11 02:32:07,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:32:07,649 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:07,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:07,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:32:07,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2021-10-11 02:32:07,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:07,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079263722] [2021-10-11 02:32:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:07,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:32:07,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:08,254 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:08,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:08,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079263722] [2021-10-11 02:32:08,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:08,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:32:08,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976878277] [2021-10-11 02:32:08,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:32:08,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:08,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:32:08,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:08,484 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 9 states. [2021-10-11 02:32:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:09,388 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2021-10-11 02:32:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:32:09,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2021-10-11 02:32:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:09,390 INFO L225 Difference]: With dead ends: 60 [2021-10-11 02:32:09,390 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:32:09,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:32:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:32:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:32:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:32:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2021-10-11 02:32:09,399 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2021-10-11 02:32:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:09,399 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2021-10-11 02:32:09,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:32:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2021-10-11 02:32:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 02:32:09,401 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:09,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:09,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:32:09,614 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:09,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2021-10-11 02:32:09,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:09,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929515827] [2021-10-11 02:32:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:09,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:32:09,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:09,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:09,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929515827] [2021-10-11 02:32:09,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:09,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:09,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299958653] [2021-10-11 02:32:09,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:09,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:09,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:09,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:09,933 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 5 states. [2021-10-11 02:32:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:10,652 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2021-10-11 02:32:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:10,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-10-11 02:32:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:10,655 INFO L225 Difference]: With dead ends: 87 [2021-10-11 02:32:10,655 INFO L226 Difference]: Without dead ends: 52 [2021-10-11 02:32:10,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-11 02:32:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-10-11 02:32:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:32:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-10-11 02:32:10,663 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2021-10-11 02:32:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:10,664 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-10-11 02:32:10,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-10-11 02:32:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:32:10,665 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:10,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:10,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:32:10,880 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2021-10-11 02:32:10,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:10,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456880825] [2021-10-11 02:32:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:10,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:10,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:11,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:11,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456880825] [2021-10-11 02:32:11,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:11,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:11,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790858254] [2021-10-11 02:32:11,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:11,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:11,042 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 3 states. [2021-10-11 02:32:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:11,155 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2021-10-11 02:32:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:11,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2021-10-11 02:32:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:11,158 INFO L225 Difference]: With dead ends: 83 [2021-10-11 02:32:11,158 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:32:11,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:32:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-10-11 02:32:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-10-11 02:32:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2021-10-11 02:32:11,166 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 32 [2021-10-11 02:32:11,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:11,167 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2021-10-11 02:32:11,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2021-10-11 02:32:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-11 02:32:11,169 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:11,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:11,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:32:11,383 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:11,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:11,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1622546113, now seen corresponding path program 1 times [2021-10-11 02:32:11,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:11,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039458791] [2021-10-11 02:32:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:11,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:11,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:11,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:32:11,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039458791] [2021-10-11 02:32:11,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [715442001] [2021-10-11 02:32:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:32:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:11,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:12,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:12,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:32:12,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2021-10-11 02:32:12,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092882185] [2021-10-11 02:32:12,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:12,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:12,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:12,100 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand 4 states. [2021-10-11 02:32:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:12,325 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2021-10-11 02:32:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:12,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2021-10-11 02:32:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:12,327 INFO L225 Difference]: With dead ends: 80 [2021-10-11 02:32:12,328 INFO L226 Difference]: Without dead ends: 59 [2021-10-11 02:32:12,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:12,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-11 02:32:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2021-10-11 02:32:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:32:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-10-11 02:32:12,338 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 35 [2021-10-11 02:32:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:12,338 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-10-11 02:32:12,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-10-11 02:32:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:32:12,340 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:12,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:12,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3 [2021-10-11 02:32:12,747 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:12,748 INFO L82 PathProgramCache]: Analyzing trace with hash 886415899, now seen corresponding path program 1 times [2021-10-11 02:32:12,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:12,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896631967] [2021-10-11 02:32:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:12,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:12,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:12,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:13,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896631967] [2021-10-11 02:32:13,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [636297396] [2021-10-11 02:32:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:32:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:13,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:13,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:13,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:13,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062849752] [2021-10-11 02:32:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:13,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:13,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:13,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:13,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:32:13,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-11 02:32:13,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721045646] [2021-10-11 02:32:13,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:13,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:13,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:13,586 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 6 states. [2021-10-11 02:32:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:13,895 INFO L93 Difference]: Finished difference Result 92 states and 123 transitions. [2021-10-11 02:32:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:32:13,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2021-10-11 02:32:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:13,898 INFO L225 Difference]: With dead ends: 92 [2021-10-11 02:32:13,898 INFO L226 Difference]: Without dead ends: 62 [2021-10-11 02:32:13,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-11 02:32:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-11 02:32:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-10-11 02:32:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2021-10-11 02:32:13,909 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 38 [2021-10-11 02:32:13,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:13,909 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2021-10-11 02:32:13,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2021-10-11 02:32:13,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 02:32:13,912 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:13,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:14,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt [2021-10-11 02:32:14,539 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:14,539 INFO L82 PathProgramCache]: Analyzing trace with hash -84795879, now seen corresponding path program 2 times [2021-10-11 02:32:14,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:14,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802701244] [2021-10-11 02:32:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:14,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:14,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:14,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:15,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802701244] [2021-10-11 02:32:15,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1151462389] [2021-10-11 02:32:15,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:32:15,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 02:32:15,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:32:15,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:32:15,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:15,775 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-10-11 02:32:15,789 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:15,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:15,798 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:15,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:15,835 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:32:15,836 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2021-10-11 02:32:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-11 02:32:16,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:16,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:32:16,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 16 [2021-10-11 02:32:16,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125980354] [2021-10-11 02:32:16,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:16,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:16,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:16,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:32:16,287 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 6 states. [2021-10-11 02:32:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:16,580 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2021-10-11 02:32:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:16,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2021-10-11 02:32:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:16,580 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:32:16,580 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:16,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:32:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:16,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-10-11 02:32:16,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:16,583 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:16,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:16,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:16,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt,13 mathsat -unsat_core_generation=3 [2021-10-11 02:32:16,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:32:17,208 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-10-11 02:32:17,333 INFO L262 CegarLoopResult]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-10-11 02:32:17,334 INFO L262 CegarLoopResult]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2021-10-11 02:32:17,334 INFO L262 CegarLoopResult]: For program point L60-2(lines 60 63) no Hoare annotation was computed. [2021-10-11 02:32:17,334 INFO L258 CegarLoopResult]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (_ bv0 32)) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53))) [2021-10-11 02:32:17,334 INFO L262 CegarLoopResult]: For program point L27-3(lines 21 129) no Hoare annotation was computed. [2021-10-11 02:32:17,334 INFO L262 CegarLoopResult]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2021-10-11 02:32:17,334 INFO L258 CegarLoopResult]: At program point L52-3(lines 52 53) the Hoare annotation is: false [2021-10-11 02:32:17,334 INFO L262 CegarLoopResult]: For program point L52-4(lines 52 53) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point L110-2(lines 110 111) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point L102(lines 102 116) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L265 CegarLoopResult]: At program point L160(lines 143 161) the Hoare annotation is: true [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point L119(lines 119 120) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point L119-2(lines 119 120) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L258 CegarLoopResult]: At program point L128(lines 21 129) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53))) [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point L87(lines 87 96) no Hoare annotation was computed. [2021-10-11 02:32:17,335 INFO L262 CegarLoopResult]: For program point L87-2(lines 87 96) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L46(lines 46 57) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L46-2(lines 46 57) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L258 CegarLoopResult]: At program point L71-2(lines 71 81) the Hoare annotation is: false [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L71-3(lines 71 81) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-11 02:32:17,336 INFO L262 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L89(lines 89 90) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L122-1(lines 122 127) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L155-2(lines 155 158) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L258 CegarLoopResult]: At program point L122-2(lines 122 127) the Hoare annotation is: false [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L89-2(lines 89 90) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L122-3(lines 122 127) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L106(lines 106 114) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L73(lines 73 77) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L73-2(lines 73 77) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:32:17,337 INFO L262 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L258 CegarLoopResult]: At program point L140(lines 131 141) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= ULTIMATE.start___signbit_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) (= ULTIMATE.start___signbit_double_~x (_ +zero 11 53)) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53)) |ULTIMATE.start_main_#t~short14|) [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point L92(lines 92 93) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point L92-2(lines 92 93) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L258 CegarLoopResult]: At program point L84-2(lines 84 100) the Hoare annotation is: false [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point L84-3(lines 21 129) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point L109(lines 109 114) no Hoare annotation was computed. [2021-10-11 02:32:17,338 INFO L262 CegarLoopResult]: For program point L134-1(lines 134 138) no Hoare annotation was computed. [2021-10-11 02:32:17,339 INFO L258 CegarLoopResult]: At program point L134-2(lines 134 138) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (= ULTIMATE.start___signbit_double_~x (_ +zero 11 53)) (= ULTIMATE.start___ieee754_sqrt_~x (_ +zero 11 53)) |ULTIMATE.start_main_#t~short14|) [2021-10-11 02:32:17,339 INFO L262 CegarLoopResult]: For program point L134-3(lines 134 138) no Hoare annotation was computed. [2021-10-11 02:32:17,355 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,356 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,356 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,356 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,362 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,362 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,362 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,362 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:17 BoogieIcfgContainer [2021-10-11 02:32:17,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:17,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:17,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:17,369 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:17,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:03" (3/4) ... [2021-10-11 02:32:17,373 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:17,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-11 02:32:17,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:32:17,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:32:17,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:32:17,427 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == \result && x == ~Pluszero~LONGDOUBLE() [2021-10-11 02:32:17,429 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux [2021-10-11 02:32:17,430 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: msw == v_skolemized_q#valueAsBitvector_6[63:32] && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE())) && \result == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux [2021-10-11 02:32:17,486 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_000753e0-33a7-4108-bbfb-e6e6375c52f7/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:17,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:17,488 INFO L168 Benchmark]: Toolchain (without parser) took 20328.09 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.2 MB in the beginning and 42.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:17,488 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:17,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.39 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 40.2 MB in the end (delta: -179.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:17,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.00 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 38.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:17,490 INFO L168 Benchmark]: Boogie Preprocessor took 80.52 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 36.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:17,490 INFO L168 Benchmark]: RCFGBuilder took 5985.02 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 36.0 MB in the beginning and 43.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:17,491 INFO L168 Benchmark]: TraceAbstraction took 13613.51 ms. Allocated memory is still 77.6 MB. Free memory was 42.9 MB in the beginning and 47.1 MB in the end (delta: -4.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:17,491 INFO L168 Benchmark]: Witness Printer took 119.94 ms. Allocated memory is still 77.6 MB. Free memory was 47.1 MB in the beginning and 42.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:17,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 447.39 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 40.2 MB in the end (delta: -179.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.00 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 38.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.52 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 36.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5985.02 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 36.0 MB in the beginning and 43.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13613.51 ms. Allocated memory is still 77.6 MB. Free memory was 42.9 MB in the beginning and 47.1 MB in the end (delta: -4.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * Witness Printer took 119.94 ms. Allocated memory is still 77.6 MB. Free memory was 47.1 MB in the beginning and 42.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == \result && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 131]: Loop Invariant [2021-10-11 02:32:17,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,503 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,505 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-11 02:32:17,505 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: (((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: msw == v_skolemized_q#valueAsBitvector_6[63:32] && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE())) && \result == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ~bvadd64(sign, 2147483648bv32) == 0bv32 && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.1s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 489 SDtfs, 424 SDslu, 825 SDs, 0 SdLazy, 220 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 573 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 27 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 68 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 380 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 558 ConstructedInterpolants, 16 QuantifiedInterpolants, 43692 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1098 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 45/97 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...