./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 858612fdb9071600e83746a6e504d4acbbe533c1 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 858612fdb9071600e83746a6e504d4acbbe533c1 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:58:44,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:58:44,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:58:44,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:58:44,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:58:44,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:58:44,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:58:44,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:58:44,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:58:44,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:58:44,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:58:44,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:58:44,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:58:44,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:58:44,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:58:44,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:58:44,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:58:44,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:58:44,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:58:44,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:58:44,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:58:44,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:58:44,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:58:44,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:58:44,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:58:44,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:58:44,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:58:44,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:58:44,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:58:44,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:58:44,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:58:44,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:58:44,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:58:44,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:58:44,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:58:44,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:58:44,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:58:44,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:58:44,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:58:44,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:58:44,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:58:44,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:58:44,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:58:44,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:58:44,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:58:44,418 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:58:44,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:58:44,419 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:58:44,419 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:58:44,419 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:58:44,426 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:58:44,426 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:58:44,428 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:58:44,428 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:58:44,428 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:58:44,428 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:58:44,429 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:58:44,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:58:44,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:58:44,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:58:44,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:58:44,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:58:44,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:58:44,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:58:44,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:58:44,431 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:58:44,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:58:44,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:58:44,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:58:44,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:58:44,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:58:44,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:58:44,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:44,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:58:44,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:58:44,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:58:44,436 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:58:44,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:58:44,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:58:44,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:58:44,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:58:44,437 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2021-10-13 07:58:44,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:58:44,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:58:44,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:58:44,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:58:44,796 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:58:44,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-13 07:58:44,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/874436710/60bbc043d8cb47139fe9484bba278458/FLAG9ba4a37c9 [2021-10-13 07:58:45,336 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:58:45,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-13 07:58:45,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/874436710/60bbc043d8cb47139fe9484bba278458/FLAG9ba4a37c9 [2021-10-13 07:58:45,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/874436710/60bbc043d8cb47139fe9484bba278458 [2021-10-13 07:58:45,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:58:45,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:58:45,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:45,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:58:45,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:58:45,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722b1638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45, skipping insertion in model container [2021-10-13 07:58:45,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:58:45,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:58:45,970 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-13 07:58:45,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:45,982 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:58:46,006 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-13 07:58:46,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:46,021 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:58:46,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46 WrapperNode [2021-10-13 07:58:46,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:46,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:46,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:58:46,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:58:46,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:46,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:58:46,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:58:46,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:58:46,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:58:46,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:58:46,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:58:46,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:58:46,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (1/1) ... [2021-10-13 07:58:46,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:46,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:58:46,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:58:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:58:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:58:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 07:58:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:58:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:58:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:58:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:58:46,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:58:46,758 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-13 07:58:46,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:46 BoogieIcfgContainer [2021-10-13 07:58:46,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:58:46,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:58:46,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:58:46,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:58:46,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:58:45" (1/3) ... [2021-10-13 07:58:46,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad9823b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:46, skipping insertion in model container [2021-10-13 07:58:46,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:46" (2/3) ... [2021-10-13 07:58:46,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad9823b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:46, skipping insertion in model container [2021-10-13 07:58:46,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:46" (3/3) ... [2021-10-13 07:58:46,775 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-10-13 07:58:46,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:58:46,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:58:46,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:58:46,866 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:58:46,866 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:58:46,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:58:46,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:46,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:46,888 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash -844709066, now seen corresponding path program 1 times [2021-10-13 07:58:46,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:58:46,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843536378] [2021-10-13 07:58:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:46,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:58:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:47,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:58:47,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843536378] [2021-10-13 07:58:47,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843536378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:47,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:47,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:58:47,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014373448] [2021-10-13 07:58:47,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:58:47,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:58:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:58:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:58:47,144 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:47,163 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-10-13 07:58:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:58:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:58:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:47,174 INFO L225 Difference]: With dead ends: 27 [2021-10-13 07:58:47,174 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 07:58:47,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:58:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 07:58:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 07:58:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 07:58:47,211 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-10-13 07:58:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:47,212 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 07:58:47,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 07:58:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:58:47,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:47,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:47,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:58:47,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:47,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1253567085, now seen corresponding path program 1 times [2021-10-13 07:58:47,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:58:47,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73546905] [2021-10-13 07:58:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:47,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:58:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:58:47,340 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:58:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:58:47,417 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:58:47,418 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:58:47,420 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:58:47,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:58:47,428 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:58:47,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:58:47 BoogieIcfgContainer [2021-10-13 07:58:47,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:58:47,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:58:47,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:58:47,452 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:58:47,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:46" (3/4) ... [2021-10-13 07:58:47,457 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:58:47,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:58:47,459 INFO L168 Benchmark]: Toolchain (without parser) took 1730.47 ms. Allocated memory is still 127.9 MB. Free memory was 91.9 MB in the beginning and 51.4 MB in the end (delta: 40.5 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:47,460 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 59.6 MB in the beginning and 59.5 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:47,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.07 ms. Allocated memory is still 127.9 MB. Free memory was 91.6 MB in the beginning and 102.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:47,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.53 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 100.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:47,462 INFO L168 Benchmark]: Boogie Preprocessor took 29.38 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 99.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:47,463 INFO L168 Benchmark]: RCFGBuilder took 662.99 ms. Allocated memory is still 127.9 MB. Free memory was 99.3 MB in the beginning and 76.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:47,464 INFO L168 Benchmark]: TraceAbstraction took 687.50 ms. Allocated memory is still 127.9 MB. Free memory was 76.0 MB in the beginning and 51.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:47,465 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 127.9 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:47,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 59.6 MB in the beginning and 59.5 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.07 ms. Allocated memory is still 127.9 MB. Free memory was 91.6 MB in the beginning and 102.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.53 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 100.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.38 ms. Allocated memory is still 127.9 MB. Free memory was 100.8 MB in the beginning and 99.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 662.99 ms. Allocated memory is still 127.9 MB. Free memory was 99.3 MB in the beginning and 76.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 687.50 ms. Allocated memory is still 127.9 MB. Free memory was 76.0 MB in the beginning and 51.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.22 ms. Allocated memory is still 127.9 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 68]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 569.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 53.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.5ms SsaConstructionTime, 134.8ms SatisfiabilityAnalysisTime, 87.5ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:58:47,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:58:50,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:58:50,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:58:50,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:58:50,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:58:50,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:58:50,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:58:50,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:58:50,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:58:50,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:58:50,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:58:50,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:58:50,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:58:50,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:58:50,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:58:50,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:58:50,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:58:50,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:58:50,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:58:50,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:58:50,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:58:50,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:58:50,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:58:50,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:58:50,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:58:50,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:58:50,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:58:50,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:58:50,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:58:50,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:58:50,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:58:50,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:58:50,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:58:50,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:58:50,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:58:50,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:58:50,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:58:50,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:58:50,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:58:50,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:58:50,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:58:50,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:58:50,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:58:50,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:58:50,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:58:50,181 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:58:50,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:58:50,181 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:58:50,181 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:58:50,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:58:50,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:58:50,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:58:50,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:58:50,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:58:50,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:58:50,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:58:50,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:58:50,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:58:50,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:58:50,187 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:58:50,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:58:50,187 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:58:50,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:58:50,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:58:50,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:58:50,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:58:50,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:58:50,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:58:50,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:50,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:58:50,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:58:50,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:58:50,189 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:58:50,189 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:58:50,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:58:50,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:58:50,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:58:50,190 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_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2021-10-13 07:58:50,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:58:50,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:58:50,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:58:50,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:58:50,722 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:58:50,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-13 07:58:50,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/ec7b42111/c9533d80592748569308f532668b07bc/FLAG4c742176b [2021-10-13 07:58:51,301 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:58:51,301 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-10-13 07:58:51,310 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/ec7b42111/c9533d80592748569308f532668b07bc/FLAG4c742176b [2021-10-13 07:58:51,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/data/ec7b42111/c9533d80592748569308f532668b07bc [2021-10-13 07:58:51,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:58:51,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:58:51,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:51,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:58:51,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:58:51,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:51,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e1fc47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51, skipping insertion in model container [2021-10-13 07:58:51,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:51,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:58:51,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:58:51,904 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-13 07:58:51,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:51,922 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:58:51,947 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-10-13 07:58:51,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:51,968 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:58:51,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51 WrapperNode [2021-10-13 07:58:51,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:51,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:51,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:58:51,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:58:51,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:51,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:52,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:58:52,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:58:52,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:58:52,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:58:52,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:58:52,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:58:52,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:58:52,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:52,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:58:52,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:58:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-13 07:58:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:58:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:58:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:58:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:58:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:58:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:58:52,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:58:52,580 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-13 07:58:52,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:52 BoogieIcfgContainer [2021-10-13 07:58:52,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:58:52,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:58:52,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:58:52,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:58:52,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:58:51" (1/3) ... [2021-10-13 07:58:52,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53034ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:52, skipping insertion in model container [2021-10-13 07:58:52,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (2/3) ... [2021-10-13 07:58:52,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53034ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:52, skipping insertion in model container [2021-10-13 07:58:52,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:52" (3/3) ... [2021-10-13 07:58:52,591 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-10-13 07:58:52,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:58:52,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:58:52,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:58:52,743 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:58:52,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:58:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:58:52,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:52,779 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:52,780 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:52,791 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-13 07:58:52,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:52,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008568306] [2021-10-13 07:58:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:52,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:52,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:52,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:52,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:58:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:52,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:58:52,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:53,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:53,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:53,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008568306] [2021-10-13 07:58:53,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008568306] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:53,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:53,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:58:53,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409802459] [2021-10-13 07:58:53,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:58:53,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:58:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:58:53,173 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:53,198 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-13 07:58:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:58:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 07:58:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:53,209 INFO L225 Difference]: With dead ends: 54 [2021-10-13 07:58:53,210 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 07:58:53,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:58:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 07:58:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-13 07:58:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-13 07:58:53,256 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-13 07:58:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:53,256 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-13 07:58:53,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-13 07:58:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:58:53,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:53,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:53,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:53,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:53,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:53,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-13 07:58:53,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:53,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110009642] [2021-10-13 07:58:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:53,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:53,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:53,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:53,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:58:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:53,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:58:53,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:53,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:53,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:53,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110009642] [2021-10-13 07:58:53,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110009642] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:53,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:53,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:58:53,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592906344] [2021-10-13 07:58:53,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:58:53,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:58:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:58:53,728 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:53,853 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-10-13 07:58:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:58:53,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:58:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:53,856 INFO L225 Difference]: With dead ends: 52 [2021-10-13 07:58:53,856 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 07:58:53,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:58:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 07:58:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-13 07:58:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-13 07:58:53,865 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-13 07:58:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:53,865 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-13 07:58:53,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-13 07:58:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:58:53,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:53,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:53,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:54,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:54,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-13 07:58:54,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:54,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608796876] [2021-10-13 07:58:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:54,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:54,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:54,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:58:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:54,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:58:54,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:54,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:54,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:54,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608796876] [2021-10-13 07:58:54,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608796876] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:54,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:54,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:58:54,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496507339] [2021-10-13 07:58:54,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:58:54,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:58:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:58:54,723 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:55,698 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-10-13 07:58:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:58:55,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:58:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:55,714 INFO L225 Difference]: With dead ends: 36 [2021-10-13 07:58:55,714 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:58:55,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 470.1ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:58:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:58:55,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-13 07:58:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-13 07:58:55,721 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-13 07:58:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:55,722 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-13 07:58:55,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-13 07:58:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:58:55,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:55,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:55,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:55,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:55,951 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:55,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-10-13 07:58:55,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:55,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237151216] [2021-10-13 07:58:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:55,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:55,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:55,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:55,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:58:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:56,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:58:56,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:56,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:56,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:56,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237151216] [2021-10-13 07:58:56,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237151216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:56,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:56,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:58:56,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65107638] [2021-10-13 07:58:56,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:58:56,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:56,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:58:56,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:58:56,224 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:56,345 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-13 07:58:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:58:56,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 07:58:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:56,351 INFO L225 Difference]: With dead ends: 52 [2021-10-13 07:58:56,351 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 07:58:56,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:58:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 07:58:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-13 07:58:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-13 07:58:56,358 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-10-13 07:58:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:56,359 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-13 07:58:56,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-13 07:58:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:58:56,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:56,360 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:56,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:56,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:56,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:56,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-10-13 07:58:56,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:56,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793901283] [2021-10-13 07:58:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:56,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:56,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:56,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:56,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:58:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:56,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:58:56,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:57,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:57,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:57,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793901283] [2021-10-13 07:58:57,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793901283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:57,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:57,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-13 07:58:57,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863392356] [2021-10-13 07:58:57,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:58:57,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:57,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:58:57,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:58:57,287 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:58,128 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-10-13 07:58:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:58:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 07:58:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:58,135 INFO L225 Difference]: With dead ends: 32 [2021-10-13 07:58:58,135 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 07:58:58,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 677.5ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:58:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 07:58:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 07:58:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-13 07:58:58,140 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-10-13 07:58:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:58,140 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-13 07:58:58,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-13 07:58:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:58:58,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:58,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:58,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:58,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:58,357 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:58,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:58,358 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-10-13 07:58:58,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:58,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308703862] [2021-10-13 07:58:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:58,358 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:58,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:58,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:58,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:58:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:58,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:58:58,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:58,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:58,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:58,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308703862] [2021-10-13 07:58:58,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308703862] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:58,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:58,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:58:58,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994625414] [2021-10-13 07:58:58,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:58:58,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:58:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:58:58,961 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:59,338 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-13 07:58:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:58:59,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 07:58:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:59,339 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:58:59,339 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:58:59,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 369.3ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:58:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:58:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:58:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:58:59,341 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-13 07:58:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:59,341 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:58:59,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:58:59,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:58:59,344 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:58:59,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:59,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:59,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:58:59,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:59,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:59,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:59,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:59,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:59,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:59,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:58:59,940 INFO L857 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-10-13 07:58:59,940 INFO L857 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-10-13 07:58:59,940 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-10-13 07:58:59,941 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-10-13 07:58:59,941 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:58:59,941 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2021-10-13 07:58:59,941 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:58:59,941 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:58:59,941 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2021-10-13 07:58:59,942 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-10-13 07:58:59,942 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:58:59,942 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-10-13 07:58:59,942 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-10-13 07:58:59,942 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-10-13 07:58:59,942 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2021-10-13 07:58:59,943 INFO L853 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-10-13 07:58:59,943 INFO L857 garLoopResultBuilder]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2021-10-13 07:58:59,943 INFO L853 garLoopResultBuilder]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-10-13 07:58:59,943 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-10-13 07:58:59,943 INFO L857 garLoopResultBuilder]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2021-10-13 07:58:59,943 INFO L853 garLoopResultBuilder]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-10-13 07:58:59,943 INFO L853 garLoopResultBuilder]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32)))) (and .cse0 (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))))) [2021-10-13 07:58:59,944 INFO L860 garLoopResultBuilder]: At program point L72(lines 55 73) the Hoare annotation is: true [2021-10-13 07:58:59,944 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-10-13 07:58:59,944 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2021-10-13 07:58:59,944 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-13 07:58:59,944 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2021-10-13 07:58:59,944 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2021-10-13 07:58:59,949 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:58:59,955 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,956 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,963 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,963 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,967 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:58:59,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:58:59 BoogieIcfgContainer [2021-10-13 07:58:59,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:58:59,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:58:59,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:58:59,969 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:58:59,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:52" (3/4) ... [2021-10-13 07:58:59,973 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:58:59,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-13 07:58:59,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:58:59,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:58:59,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:59:00,014 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 :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-13 07:59:00,015 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-13 07:59:00,015 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2021-10-13 07:59:00,036 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:59:00,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:59:00,038 INFO L168 Benchmark]: Toolchain (without parser) took 8393.46 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 44.1 MB in the beginning and 34.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:00,039 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:59:00,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.39 ms. Allocated memory is still 65.0 MB. Free memory was 44.0 MB in the beginning and 33.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:00,040 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.36 ms. Allocated memory is still 65.0 MB. Free memory was 33.0 MB in the beginning and 47.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:00,040 INFO L168 Benchmark]: Boogie Preprocessor took 69.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 45.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:59:00,041 INFO L168 Benchmark]: RCFGBuilder took 457.63 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 32.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:00,042 INFO L168 Benchmark]: TraceAbstraction took 7384.36 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 31.9 MB in the beginning and 38.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:00,042 INFO L168 Benchmark]: Witness Printer took 67.87 ms. Allocated memory is still 92.3 MB. Free memory was 38.5 MB in the beginning and 34.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:59:00,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.39 ms. Allocated memory is still 65.0 MB. Free memory was 44.0 MB in the beginning and 33.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.36 ms. Allocated memory is still 65.0 MB. Free memory was 33.0 MB in the beginning and 47.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 45.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 457.63 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 32.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7384.36 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 31.9 MB in the beginning and 38.5 MB in the end (delta: -6.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 67.87 ms. Allocated memory is still 92.3 MB. Free memory was 38.5 MB in the beginning and 34.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 68]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7219.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 24.7ms, AutomataDifference: 2553.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 394.1ms, InitialAbstractionConstructionTime: 15.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1310.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1601.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 50.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 190 FormulaSimplificationTreeSizeReduction, 86.9ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 300.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 109.9ms SsaConstructionTime, 394.8ms SatisfiabilityAnalysisTime, 1966.1ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 367 ConjunctsInSsa, 38 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-10-13 07:59:00,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:59:00,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:59:00,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:59:00,054 WARN L418 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) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 46]: Loop Invariant [2021-10-13 07:59:00,055 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:59:00,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:59:00,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-13 07:59:00,056 WARN L418 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 :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:59:00,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535b2aff-3665-4ba6-bf18-99f81c1be1e4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...