./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.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_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 216b013ad4da4eb5e85a87de58b407e30252b4c5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 216b013ad4da4eb5e85a87de58b407e30252b4c5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:23:48,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:48,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:48,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:48,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:48,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:48,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:48,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:48,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:48,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:48,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:48,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:48,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:48,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:48,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:48,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:48,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:48,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:48,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:48,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:48,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:48,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:48,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:48,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:48,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:48,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:48,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:48,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:48,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:48,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:48,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:48,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:48,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:48,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:48,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:48,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:48,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:48,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:48,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:48,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:48,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:48,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:23:48,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:48,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:48,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:48,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:48,384 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:48,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:48,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:23:48,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:23:48,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:23:48,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:48,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:23:48,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:23:48,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:23:48,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:23:48,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:48,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:48,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:23:48,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:48,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:48,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:23:48,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:48,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:48,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:23:48,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:23:48,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:23:48,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:23:48,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:23:48,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:48,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2021-10-11 00:23:48,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:48,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:48,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:48,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:48,671 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:48,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-11 00:23:48,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/2ab7afd3e/8deca0ce9216465c9f26eaa068eb3362/FLAGeba0d4001 [2021-10-11 00:23:49,324 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:49,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-11 00:23:49,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/2ab7afd3e/8deca0ce9216465c9f26eaa068eb3362/FLAGeba0d4001 [2021-10-11 00:23:49,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/2ab7afd3e/8deca0ce9216465c9f26eaa068eb3362 [2021-10-11 00:23:49,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:49,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:49,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:49,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:49,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:49,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:49" (1/1) ... [2021-10-11 00:23:49,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bbfae73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:49, skipping insertion in model container [2021-10-11 00:23:49,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:49" (1/1) ... [2021-10-11 00:23:49,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:49,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:49,966 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_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-11 00:23:49,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:49,992 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:50,019 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_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-11 00:23:50,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:50,036 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:50,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50 WrapperNode [2021-10-11 00:23:50,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:50,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:50,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:50,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:50,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:50,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:50,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:50,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:50,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... [2021-10-11 00:23:50,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:50,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:50,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:50,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:50,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:23:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:23:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 00:23:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:23:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:23:50,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:50,606 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 00:23:50,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:50 BoogieIcfgContainer [2021-10-11 00:23:50,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:50,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:23:50,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:23:50,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:23:50,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:23:49" (1/3) ... [2021-10-11 00:23:50,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e67c046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:50, skipping insertion in model container [2021-10-11 00:23:50,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:50" (2/3) ... [2021-10-11 00:23:50,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e67c046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:50, skipping insertion in model container [2021-10-11 00:23:50,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:50" (3/3) ... [2021-10-11 00:23:50,618 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-10-11 00:23:50,649 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:23:50,657 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:23:50,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:23:50,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:23:50,697 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:23:50,697 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:23:50,697 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:50,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:50,698 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:23:50,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:50,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:23:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 00:23:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:23:50,748 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:50,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:50,749 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:50,756 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-11 00:23:50,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:50,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578380141] [2021-10-11 00:23:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:50,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578380141] [2021-10-11 00:23:50,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:50,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:50,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693844871] [2021-10-11 00:23:50,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:23:50,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:23:50,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:23:50,967 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2021-10-11 00:23:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:50,998 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-11 00:23:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:23:50,999 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 00:23:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:51,022 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:23:51,032 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:23:51,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:23:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:23:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 00:23:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:23:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-11 00:23:51,080 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-11 00:23:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:51,080 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-11 00:23:51,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:23:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-11 00:23:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:23:51,082 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:51,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:51,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:23:51,083 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:51,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-11 00:23:51,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:51,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007238385] [2021-10-11 00:23:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:51,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007238385] [2021-10-11 00:23:51,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:51,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:51,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546374146] [2021-10-11 00:23:51,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:51,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:51,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:51,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:51,335 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2021-10-11 00:23:51,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:51,430 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-11 00:23:51,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:51,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:23:51,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:51,432 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:23:51,433 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:23:51,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 00:23:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:23:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-11 00:23:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:23:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:23:51,442 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-11 00:23:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:51,443 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:23:51,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:23:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:23:51,447 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:51,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:51,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:23:51,448 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:51,452 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-10-11 00:23:51,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:51,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778749118] [2021-10-11 00:23:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:51,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778749118] [2021-10-11 00:23:51,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:51,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:51,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333940915] [2021-10-11 00:23:51,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:51,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:51,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:51,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:51,597 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:23:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:51,656 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:23:51,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:51,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:23:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:51,658 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:23:51,658 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:23:51,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:23:51,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:23:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:23:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:23:51,665 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-10-11 00:23:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:51,666 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:23:51,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:23:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:23:51,667 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:51,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:51,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:23:51,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-10-11 00:23:51,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:51,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311362557] [2021-10-11 00:23:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:51,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311362557] [2021-10-11 00:23:51,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:51,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:51,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645373675] [2021-10-11 00:23:51,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:51,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:51,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:51,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:51,746 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:23:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:51,841 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-10-11 00:23:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:51,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:23:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:51,843 INFO L225 Difference]: With dead ends: 45 [2021-10-11 00:23:51,846 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 00:23:51,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 00:23:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-10-11 00:23:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:23:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:23:51,861 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-10-11 00:23:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:51,862 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:23:51,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:23:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:23:51,864 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:51,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:51,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:23:51,864 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:51,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-10-11 00:23:51,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:51,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805214914] [2021-10-11 00:23:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:51,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805214914] [2021-10-11 00:23:51,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:51,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:51,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269223612] [2021-10-11 00:23:51,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:51,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:23:51,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:51,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:51,960 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:23:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:52,016 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:23:52,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:52,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 00:23:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:52,018 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:23:52,018 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:23:52,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:23:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:23:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:23:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:23:52,025 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-10-11 00:23:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:52,025 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:23:52,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:23:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:23:52,027 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:52,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:52,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:23:52,027 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:52,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:52,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-11 00:23:52,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:23:52,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385129704] [2021-10-11 00:23:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:23:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:52,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:23:52,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:23:52,127 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:23:52,127 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:23:52,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:23:52,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:23:52 BoogieIcfgContainer [2021-10-11 00:23:52,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:23:52,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:23:52,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:23:52,164 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:23:52,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:50" (3/4) ... [2021-10-11 00:23:52,172 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:23:52,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:23:52,175 INFO L168 Benchmark]: Toolchain (without parser) took 2484.90 ms. Allocated memory is still 132.1 MB. Free memory was 98.8 MB in the beginning and 62.0 MB in the end (delta: 36.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:52,176 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 88.1 MB. Free memory was 44.8 MB in the beginning and 44.7 MB in the end (delta: 79.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:52,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.12 ms. Allocated memory is still 132.1 MB. Free memory was 98.5 MB in the beginning and 106.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:52,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.87 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 104.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:52,184 INFO L168 Benchmark]: Boogie Preprocessor took 36.23 ms. Allocated memory is still 132.1 MB. Free memory was 104.8 MB in the beginning and 103.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:52,184 INFO L168 Benchmark]: RCFGBuilder took 473.73 ms. Allocated memory is still 132.1 MB. Free memory was 103.1 MB in the beginning and 84.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:52,185 INFO L168 Benchmark]: TraceAbstraction took 1553.24 ms. Allocated memory is still 132.1 MB. Free memory was 84.3 MB in the beginning and 62.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:23:52,186 INFO L168 Benchmark]: Witness Printer took 8.38 ms. Allocated memory is still 132.1 MB. Free memory was 62.7 MB in the beginning and 62.0 MB in the end (delta: 666.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:23:52,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 88.1 MB. Free memory was 44.8 MB in the beginning and 44.7 MB in the end (delta: 79.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.12 ms. Allocated memory is still 132.1 MB. Free memory was 98.5 MB in the beginning and 106.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.87 ms. Allocated memory is still 132.1 MB. Free memory was 106.3 MB in the beginning and 104.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.23 ms. Allocated memory is still 132.1 MB. Free memory was 104.8 MB in the beginning and 103.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 473.73 ms. Allocated memory is still 132.1 MB. Free memory was 103.1 MB in the beginning and 84.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1553.24 ms. Allocated memory is still 132.1 MB. Free memory was 84.3 MB in the beginning and 62.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * Witness Printer took 8.38 ms. Allocated memory is still 132.1 MB. Free memory was 62.7 MB in the beginning and 62.0 MB in the end (delta: 666.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] double res = fmax_double(x, y); [L18] return x != x; [L73] COND TRUE !isnan_double(res) [L74] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:23:55,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:23:55,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:23:55,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:23:55,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:23:55,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:23:55,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:23:55,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:23:55,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:23:55,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:23:55,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:23:55,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:23:55,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:23:55,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:23:55,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:23:55,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:23:55,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:23:55,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:23:55,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:23:55,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:23:55,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:23:55,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:23:55,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:23:55,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:23:55,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:23:55,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:23:55,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:23:55,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:23:55,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:23:55,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:23:55,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:23:55,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:23:55,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:23:55,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:23:55,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:23:55,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:23:55,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:23:55,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:23:55,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:23:55,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:23:55,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:23:55,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-11 00:23:55,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:23:55,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:23:55,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:23:55,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:23:55,317 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:23:55,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:23:55,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:23:55,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:23:55,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:23:55,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:23:55,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:23:55,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:23:55,320 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 00:23:55,321 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 00:23:55,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:23:55,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:23:55,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:23:55,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:23:55,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:23:55,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:23:55,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:23:55,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:55,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:23:55,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:23:55,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:23:55,324 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-11 00:23:55,324 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 00:23:55,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:23:55,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:23:55,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 00:23:55,325 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_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2021-10-11 00:23:55,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:23:55,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:23:55,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:23:55,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:23:55,855 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:23:55,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-11 00:23:55,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/6ec4bffbd/a7e467c2007f463f83b4f2763e6fe035/FLAGf83d15992 [2021-10-11 00:23:56,636 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:23:56,637 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-10-11 00:23:56,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/6ec4bffbd/a7e467c2007f463f83b4f2763e6fe035/FLAGf83d15992 [2021-10-11 00:23:56,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/data/6ec4bffbd/a7e467c2007f463f83b4f2763e6fe035 [2021-10-11 00:23:56,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:23:56,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:23:56,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:56,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:23:56,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:23:56,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:56" (1/1) ... [2021-10-11 00:23:56,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e63ff78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:56, skipping insertion in model container [2021-10-11 00:23:56,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:23:56" (1/1) ... [2021-10-11 00:23:56,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:23:56,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:23:56,932 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_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-11 00:23:56,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:56,991 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:23:57,045 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_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-10-11 00:23:57,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:23:57,071 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:23:57,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57 WrapperNode [2021-10-11 00:23:57,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:23:57,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:57,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:23:57,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:23:57,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:23:57,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:23:57,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:23:57,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:23:57,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... [2021-10-11 00:23:57,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:23:57,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:23:57,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:23:57,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:23:57,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:23:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-11 00:23:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 00:23:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:23:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 00:23:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:23:57,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:23:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:23:57,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:23:57,805 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 00:23:57,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:57 BoogieIcfgContainer [2021-10-11 00:23:57,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:23:57,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:23:57,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:23:57,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:23:57,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:23:56" (1/3) ... [2021-10-11 00:23:57,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0d78b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:57, skipping insertion in model container [2021-10-11 00:23:57,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:23:57" (2/3) ... [2021-10-11 00:23:57,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0d78b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:23:57, skipping insertion in model container [2021-10-11 00:23:57,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:57" (3/3) ... [2021-10-11 00:23:57,824 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-10-11 00:23:57,842 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:23:57,846 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:23:57,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:23:57,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:23:57,904 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:23:57,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:23:57,905 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:23:57,905 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:23:57,905 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:23:57,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:23:57,906 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:23:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-10-11 00:23:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:23:57,927 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:57,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:57,928 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:57,935 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-11 00:23:57,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:23:57,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905086107] [2021-10-11 00:23:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 00:23:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:58,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 00:23:58,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:58,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:23:58,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905086107] [2021-10-11 00:23:58,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:58,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:23:58,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24835862] [2021-10-11 00:23:58,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:23:58,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:23:58,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:23:58,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:23:58,294 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2021-10-11 00:23:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:58,332 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-11 00:23:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:23:58,334 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 00:23:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:58,346 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:23:58,346 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:23:58,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:23:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:23:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 00:23:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:23:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-11 00:23:58,396 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-11 00:23:58,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:58,397 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-11 00:23:58,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:23:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-11 00:23:58,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:23:58,399 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:58,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:58,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 00:23:58,624 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:58,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:58,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-11 00:23:58,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:23:58,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503037680] [2021-10-11 00:23:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 00:23:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:58,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:23:58,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:59,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:23:59,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503037680] [2021-10-11 00:23:59,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:59,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:59,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742487246] [2021-10-11 00:23:59,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:59,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:23:59,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:59,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:59,021 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2021-10-11 00:23:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:59,139 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-11 00:23:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:59,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:23:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:59,142 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:23:59,142 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:23:59,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:23:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-11 00:23:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:23:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:23:59,151 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-11 00:23:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:59,152 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:23:59,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:23:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:23:59,153 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:59,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:23:59,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 00:23:59,367 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:23:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:23:59,368 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-10-11 00:23:59,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:23:59,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759370822] [2021-10-11 00:23:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 00:23:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:23:59,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:23:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:23:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:23:59,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:23:59,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759370822] [2021-10-11 00:23:59,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:23:59,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:23:59,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000286001] [2021-10-11 00:23:59,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:23:59,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:23:59,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:23:59,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:23:59,545 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:23:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:23:59,873 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:23:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:23:59,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:23:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:23:59,876 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:23:59,876 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:23:59,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:23:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:23:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:23:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:23:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:23:59,884 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-10-11 00:23:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:23:59,884 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:23:59,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:23:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:23:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:23:59,886 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:23:59,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:00,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 00:24:00,099 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-10-11 00:24:00,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:00,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331063379] [2021-10-11 00:24:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:00,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:00,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:00,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:00,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331063379] [2021-10-11 00:24:00,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:00,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:00,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844988677] [2021-10-11 00:24:00,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:00,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:00,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:00,294 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:24:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:00,625 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:24:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:00,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:24:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:00,628 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:24:00,628 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:24:00,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:00,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:24:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:24:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:24:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:24:00,635 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-10-11 00:24:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:00,636 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:24:00,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:24:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:24:00,637 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:00,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:00,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 00:24:00,853 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:00,854 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-10-11 00:24:00,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:00,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204479032] [2021-10-11 00:24:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:00,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:00,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:01,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:01,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204479032] [2021-10-11 00:24:01,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:01,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:01,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132322371] [2021-10-11 00:24:01,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:01,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:01,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:01,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:01,027 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2021-10-11 00:24:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:01,601 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-11 00:24:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:01,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 00:24:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:01,603 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:24:01,604 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:24:01,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:24:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:24:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:24:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-11 00:24:01,610 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-10-11 00:24:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:01,611 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-11 00:24:01,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-11 00:24:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:24:01,612 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:01,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:01,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 00:24:01,825 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:01,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-11 00:24:01,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:01,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097694661] [2021-10-11 00:24:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:01,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:24:01,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:02,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:02,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097694661] [2021-10-11 00:24:02,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:02,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:24:02,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57950101] [2021-10-11 00:24:02,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:24:02,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:02,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:24:02,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:24:02,178 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 6 states. [2021-10-11 00:24:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:02,579 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-10-11 00:24:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:24:02,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 00:24:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:02,585 INFO L225 Difference]: With dead ends: 36 [2021-10-11 00:24:02,585 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:24:02,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:24:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:24:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-11 00:24:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:24:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-11 00:24:02,591 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-11 00:24:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:02,591 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-11 00:24:02,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:24:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-11 00:24:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:24:02,592 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:02,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:02,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 00:24:02,806 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:02,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-10-11 00:24:02,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:02,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260978010] [2021-10-11 00:24:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:02,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:02,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:02,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260978010] [2021-10-11 00:24:02,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:02,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:02,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708854252] [2021-10-11 00:24:02,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:02,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:02,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:02,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:02,958 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 4 states. [2021-10-11 00:24:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:03,042 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-10-11 00:24:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:03,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 00:24:03,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:03,044 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:24:03,044 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:24:03,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:24:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-11 00:24:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:24:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-11 00:24:03,051 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-10-11 00:24:03,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:03,051 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-11 00:24:03,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-11 00:24:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:24:03,052 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:03,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:03,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 00:24:03,267 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash 874917212, now seen corresponding path program 1 times [2021-10-11 00:24:03,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:03,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96319692] [2021-10-11 00:24:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:03,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:03,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:03,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:03,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96319692] [2021-10-11 00:24:03,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:03,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:03,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907092474] [2021-10-11 00:24:03,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:03,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:03,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:03,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:03,411 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2021-10-11 00:24:03,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:03,498 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-10-11 00:24:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:03,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 00:24:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:03,504 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:24:03,504 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:24:03,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:24:03,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-11 00:24:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:24:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-11 00:24:03,511 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 17 [2021-10-11 00:24:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:03,511 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-11 00:24:03,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-11 00:24:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:24:03,512 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:03,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:03,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 00:24:03,729 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:03,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:03,729 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-10-11 00:24:03,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:03,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904612741] [2021-10-11 00:24:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:03,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:24:03,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:04,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:04,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904612741] [2021-10-11 00:24:04,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:04,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:24:04,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857574264] [2021-10-11 00:24:04,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:24:04,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:04,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:24:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:24:04,041 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 7 states. [2021-10-11 00:24:04,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:04,428 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-10-11 00:24:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:24:04,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-10-11 00:24:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:04,430 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:24:04,430 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:24:04,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:24:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:24:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 00:24:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:24:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-10-11 00:24:04,436 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2021-10-11 00:24:04,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:04,436 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-10-11 00:24:04,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:24:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-10-11 00:24:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:24:04,437 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:04,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:04,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 00:24:04,638 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:04,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:04,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1049576048, now seen corresponding path program 1 times [2021-10-11 00:24:04,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:04,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85402468] [2021-10-11 00:24:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:04,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:04,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:04,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85402468] [2021-10-11 00:24:04,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:04,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:04,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823777389] [2021-10-11 00:24:04,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:04,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:04,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:04,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:04,782 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2021-10-11 00:24:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:04,886 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-11 00:24:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:04,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-10-11 00:24:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:04,888 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:24:04,888 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:24:04,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:24:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-11 00:24:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:24:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-11 00:24:04,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2021-10-11 00:24:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:04,892 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-11 00:24:04,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-10-11 00:24:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:24:04,893 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:04,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:05,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 00:24:05,104 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:05,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1983383519, now seen corresponding path program 1 times [2021-10-11 00:24:05,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:05,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412628773] [2021-10-11 00:24:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:05,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:05,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:05,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:05,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412628773] [2021-10-11 00:24:05,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:05,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:24:05,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313145994] [2021-10-11 00:24:05,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:05,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:05,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:05,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:05,229 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2021-10-11 00:24:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:05,321 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-11 00:24:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:05,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 00:24:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:05,322 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:24:05,323 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 00:24:05,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 00:24:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-11 00:24:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:24:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-11 00:24:05,327 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2021-10-11 00:24:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:05,327 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-11 00:24:05,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-11 00:24:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:24:05,327 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:05,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:05,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 00:24:05,535 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:24:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:05,535 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-10-11 00:24:05,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-11 00:24:05,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938566424] [2021-10-11 00:24:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 00:24:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:05,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:24:05,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:05,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 00:24:05,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938566424] [2021-10-11 00:24:05,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:05,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:24:05,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489706121] [2021-10-11 00:24:05,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:24:05,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-11 00:24:05,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:24:05,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:24:05,784 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2021-10-11 00:24:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:05,969 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-11 00:24:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:24:05,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-10-11 00:24:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:05,969 INFO L225 Difference]: With dead ends: 23 [2021-10-11 00:24:05,969 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:24:05,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:24:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:24:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:24:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:24:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:24:05,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-11 00:24:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:05,971 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:24:05,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:24:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:24:05,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:24:06,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 00:24:06,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:24:06,570 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-10-11 00:24:06,614 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2021-10-11 00:24:06,614 INFO L258 CegarLoopResult]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y))) [2021-10-11 00:24:06,614 INFO L262 CegarLoopResult]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2021-10-11 00:24:06,614 INFO L262 CegarLoopResult]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2021-10-11 00:24:06,614 INFO L258 CegarLoopResult]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y))) [2021-10-11 00:24:06,614 INFO L262 CegarLoopResult]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L258 CegarLoopResult]: At program point L52(lines 28 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y))) [2021-10-11 00:24:06,615 INFO L258 CegarLoopResult]: At program point L52-1(lines 28 53) the Hoare annotation is: (let ((.cse0 (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)))) (or (and .cse0 (= (_ bv4 32) |ULTIMATE.start___fpclassify_double_#res|)) (and .cse0 (= (_ bv2 32) |ULTIMATE.start___fpclassify_double_#res|)) (and (= (_ bv1 32) |ULTIMATE.start___fpclassify_double_#res|) .cse0) (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x)) .cse0) (and (= (_ bv3 32) |ULTIMATE.start___fpclassify_double_#res|) .cse0))) [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L265 CegarLoopResult]: At program point L77(lines 65 78) the Hoare annotation is: true [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point L44(lines 44 52) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:24:06,615 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point L41(lines 41 52) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point L62-2(line 62) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L258 CegarLoopResult]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_#res|))) [2021-10-11 00:24:06,616 INFO L262 CegarLoopResult]: For program point L59(lines 59 60) no Hoare annotation was computed. [2021-10-11 00:24:06,616 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2021-10-11 00:24:06,621 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,627 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,638 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,640 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,640 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,641 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,641 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,641 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,642 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,642 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,642 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,643 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,643 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,643 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,643 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,645 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,645 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,645 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,645 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,645 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,646 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,646 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,646 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,647 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,647 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,647 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,648 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,648 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,648 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:24:06 BoogieIcfgContainer [2021-10-11 00:24:06,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:24:06,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:24:06,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:24:06,651 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:24:06,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:23:57" (3/4) ... [2021-10-11 00:24:06,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:24:06,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-11 00:24:06,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:24:06,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:24:06,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:24:06,692 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2021-10-11 00:24:06,693 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2021-10-11 00:24:06,693 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-10-11 00:24:06,694 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) [2021-10-11 00:24:06,694 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result [2021-10-11 00:24:06,694 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 4bv32 == \result) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 2bv32 == \result)) || (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || (3bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) [2021-10-11 00:24:06,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4d6cfe-d0cb-4774-9271-29ca974c3ff7/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:24:06,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:24:06,733 INFO L168 Benchmark]: Toolchain (without parser) took 10048.54 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 51.0 MB in the beginning and 81.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,734 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 30.4 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:06,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.36 ms. Allocated memory is still 73.4 MB. Free memory was 50.8 MB in the beginning and 54.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.42 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 52.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,735 INFO L168 Benchmark]: Boogie Preprocessor took 40.67 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 51.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:06,736 INFO L168 Benchmark]: RCFGBuilder took 640.30 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 53.8 MB in the end (delta: -2.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,736 INFO L168 Benchmark]: TraceAbstraction took 8840.52 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 53.1 MB in the beginning and 27.7 MB in the end (delta: 25.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,737 INFO L168 Benchmark]: Witness Printer took 81.60 ms. Allocated memory is still 102.8 MB. Free memory was 27.7 MB in the beginning and 81.6 MB in the end (delta: -53.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:06,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 30.4 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.36 ms. Allocated memory is still 73.4 MB. Free memory was 50.8 MB in the beginning and 54.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.42 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 52.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.67 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 51.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 640.30 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 53.8 MB in the end (delta: -2.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8840.52 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 53.1 MB in the beginning and 27.7 MB in the end (delta: 25.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. * Witness Printer took 81.60 ms. Allocated memory is still 102.8 MB. Free memory was 27.7 MB in the beginning and 81.6 MB in the end (delta: -53.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: 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: 55]: Loop Invariant [2021-10-11 00:24:06,751 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,751 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,752 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,752 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 18]: Loop Invariant [2021-10-11 00:24:06,754 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,754 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,756 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,756 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && 1bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant [2021-10-11 00:24:06,757 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,757 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,758 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,758 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - InvariantResult [Line: 28]: Loop Invariant [2021-10-11 00:24:06,758 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,758 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,759 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,759 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,759 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,759 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,766 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,767 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,767 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,767 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,767 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,767 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 4bv32 == \result) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 2bv32 == \result)) || (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y))) || (3bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y)) - InvariantResult [Line: 31]: Loop Invariant [2021-10-11 00:24:06,769 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,769 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,770 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - InvariantResult [Line: 28]: Loop Invariant [2021-10-11 00:24:06,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-11 00:24:06,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 413 SDtfs, 132 SDslu, 682 SDs, 0 SdLazy, 219 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 68 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 21 NumberOfFragments, 139 HoareAnnotationTreeSize, 7 FomulaSimplifications, 808 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 169 ConstructedInterpolants, 36 QuantifiedInterpolants, 6671 SizeOfPredicates, 35 NumberOfNonLiveVariables, 751 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...