./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.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_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/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_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/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_5463081c-4530-40ef-a661-fcbe98c7e1ff/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 8039b1e35b9e459b273890fa707790cd9b2d1812 ........................................................................................................................................................................................................................................................................................................................... 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/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_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/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_5463081c-4530-40ef-a661-fcbe98c7e1ff/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 8039b1e35b9e459b273890fa707790cd9b2d1812 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:33:16,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:33:16,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:33:16,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:33:16,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:33:16,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:33:16,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:33:16,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:33:16,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:33:16,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:33:16,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:33:16,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:33:16,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:33:16,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:33:16,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:33:16,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:33:16,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:33:16,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:33:16,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:33:16,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:33:16,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:33:16,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:33:16,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:33:16,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:33:16,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:33:16,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:33:16,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:33:16,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:33:16,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:33:16,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:33:16,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:33:16,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:33:16,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:33:16,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:33:16,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:33:16,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:33:16,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:33:16,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:33:16,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:33:16,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:33:16,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:33:16,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:33:16,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:33:16,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:33:16,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:33:16,526 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:33:16,526 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:33:16,526 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:33:16,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:33:16,527 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:33:16,527 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:33:16,527 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:33:16,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:33:16,529 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:33:16,529 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:33:16,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:33:16,530 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:33:16,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:33:16,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:33:16,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:33:16,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:33:16,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:33:16,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:33:16,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:33:16,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:33:16,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:33:16,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:33:16,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:33:16,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:33:16,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:33:16,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:33:16,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:33:16,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:33:16,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:33:16,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:33:16,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:33:16,536 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:33:16,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:33:16,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:33:16,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:33:16,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:33:16,537 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2021-10-13 07:33:16,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:33:16,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:33:16,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:33:16,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:33:16,838 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:33:16,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-13 07:33:16,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/eae1cff3a/2f1fc1f0ad7b49c7a477b7a58cb0bdf1/FLAGfe92cc42b [2021-10-13 07:33:17,420 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:33:17,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-13 07:33:17,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/eae1cff3a/2f1fc1f0ad7b49c7a477b7a58cb0bdf1/FLAGfe92cc42b [2021-10-13 07:33:17,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/eae1cff3a/2f1fc1f0ad7b49c7a477b7a58cb0bdf1 [2021-10-13 07:33:17,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:33:17,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:33:17,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:17,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:33:17,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:33:17,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:17" (1/1) ... [2021-10-13 07:33:17,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7bf537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:17, skipping insertion in model container [2021-10-13 07:33:17,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:17" (1/1) ... [2021-10-13 07:33:17,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:33:17,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:33:18,021 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-13 07:33:18,025 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-13 07:33:18,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:18,034 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:33:18,055 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-13 07:33:18,057 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-13 07:33:18,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:18,072 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:33:18,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18 WrapperNode [2021-10-13 07:33:18,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:18,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:33:18,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:33:18,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:33:18,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:33:18,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:33:18,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:33:18,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:33:18,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:33:18,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:33:18,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:33:18,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:33:18,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (1/1) ... [2021-10-13 07:33:18,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:33:18,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:33:18,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:33:18,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:33:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:33:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:33:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 07:33:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:33:18,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:33:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:33:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:33:19,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:33:19,295 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 07:33:19,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:19 BoogieIcfgContainer [2021-10-13 07:33:19,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:33:19,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:33:19,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:33:19,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:33:19,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:33:17" (1/3) ... [2021-10-13 07:33:19,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219780d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:33:19, skipping insertion in model container [2021-10-13 07:33:19,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:18" (2/3) ... [2021-10-13 07:33:19,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219780d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:33:19, skipping insertion in model container [2021-10-13 07:33:19,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:19" (3/3) ... [2021-10-13 07:33:19,310 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-13 07:33:19,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:33:19,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:33:19,370 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:33:19,377 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 07:33:19,377 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:33:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 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 07:33:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:33:19,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:19,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:19,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash -472833128, now seen corresponding path program 1 times [2021-10-13 07:33:19,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:33:19,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167197212] [2021-10-13 07:33:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:19,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:33:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:19,587 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 07:33:19,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:33:19,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167197212] [2021-10-13 07:33:19,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167197212] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:19,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:19,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:33:19,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349144239] [2021-10-13 07:33:19,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:33:19,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:33:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:33:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:33:19,611 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 07:33:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:19,627 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-10-13 07:33:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:33:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 07:33:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:19,636 INFO L225 Difference]: With dead ends: 36 [2021-10-13 07:33:19,637 INFO L226 Difference]: Without dead ends: 16 [2021-10-13 07:33:19,639 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 07:33:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-13 07:33:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-13 07:33:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 07:33:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-13 07:33:19,671 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-10-13 07:33:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:19,671 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-13 07:33:19,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 07:33:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-13 07:33:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:33:19,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:19,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:19,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:33:19,673 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:19,674 INFO L82 PathProgramCache]: Analyzing trace with hash 602078252, now seen corresponding path program 1 times [2021-10-13 07:33:19,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:33:19,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781660341] [2021-10-13 07:33:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:19,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:33:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:33:19,821 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:33:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:33:19,934 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:33:19,938 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:33:19,941 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:33:19,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:33:19,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:33:19,966 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:33:19,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:33:19 BoogieIcfgContainer [2021-10-13 07:33:19,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:33:19,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:33:19,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:33:19,993 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:33:19,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:19" (3/4) ... [2021-10-13 07:33:19,997 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:33:19,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:33:19,999 INFO L168 Benchmark]: Toolchain (without parser) took 2188.65 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 70.6 MB in the beginning and 97.2 MB in the end (delta: -26.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:33:20,000 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:33:20,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.14 ms. Allocated memory is still 102.8 MB. Free memory was 70.6 MB in the beginning and 77.3 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:20,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.75 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 75.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:20,002 INFO L168 Benchmark]: Boogie Preprocessor took 33.71 ms. Allocated memory is still 102.8 MB. Free memory was 75.4 MB in the beginning and 73.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:33:20,003 INFO L168 Benchmark]: RCFGBuilder took 1136.45 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 73.6 MB in the beginning and 89.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:20,004 INFO L168 Benchmark]: TraceAbstraction took 692.46 ms. Allocated memory is still 123.7 MB. Free memory was 89.1 MB in the beginning and 97.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:20,004 INFO L168 Benchmark]: Witness Printer took 4.50 ms. Allocated memory is still 123.7 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:33:20,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.14 ms. Allocated memory is still 102.8 MB. Free memory was 70.6 MB in the beginning and 77.3 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.75 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 75.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.71 ms. Allocated memory is still 102.8 MB. Free memory was 75.4 MB in the beginning and 73.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1136.45 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 73.6 MB in the beginning and 89.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 692.46 ms. Allocated memory is still 123.7 MB. Free memory was 89.1 MB in the beginning and 97.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.50 ms. Allocated memory is still 123.7 MB. Free memory is still 97.2 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: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 579.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.1ms, AutomataDifference: 43.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 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=19occurred 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: 16.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.2ms SsaConstructionTime, 181.3ms SatisfiabilityAnalysisTime, 58.8ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 07:33:20,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/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 07:33:22,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:33:22,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:33:22,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:33:22,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:33:22,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:33:22,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:33:22,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:33:22,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:33:22,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:33:22,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:33:22,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:33:22,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:33:22,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:33:22,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:33:22,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:33:22,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:33:22,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:33:22,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:33:22,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:33:22,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:33:22,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:33:22,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:33:22,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:33:22,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:33:22,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:33:22,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:33:22,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:33:22,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:33:22,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:33:22,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:33:22,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:33:22,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:33:22,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:33:22,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:33:22,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:33:22,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:33:22,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:33:22,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:33:22,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:33:22,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:33:22,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:33:22,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:33:22,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:33:22,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:33:22,720 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:33:22,720 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:33:22,720 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:33:22,721 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:33:22,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:33:22,722 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:33:22,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:33:22,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:33:22,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:33:22,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:33:22,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:33:22,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:33:22,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:33:22,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:33:22,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:33:22,725 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:33:22,725 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:33:22,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:33:22,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:33:22,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:33:22,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:33:22,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:33:22,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:33:22,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:33:22,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:33:22,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:33:22,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:33:22,726 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:33:22,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:33:22,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:33:22,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:33:22,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:33:22,727 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2021-10-13 07:33:23,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:33:23,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:33:23,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:33:23,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:33:23,170 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:33:23,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-13 07:33:23,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/6880365e5/7769867704394e4a904dd7f11f98170c/FLAG27a94a321 [2021-10-13 07:33:23,781 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:33:23,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-13 07:33:23,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/6880365e5/7769867704394e4a904dd7f11f98170c/FLAG27a94a321 [2021-10-13 07:33:24,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/data/6880365e5/7769867704394e4a904dd7f11f98170c [2021-10-13 07:33:24,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:33:24,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:33:24,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:24,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:33:24,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:33:24,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404a5491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24, skipping insertion in model container [2021-10-13 07:33:24,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:33:24,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:33:24,384 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-13 07:33:24,387 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-13 07:33:24,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:24,410 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:33:24,470 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-13 07:33:24,474 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_5463081c-4530-40ef-a661-fcbe98c7e1ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-13 07:33:24,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:24,508 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:33:24,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24 WrapperNode [2021-10-13 07:33:24,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:24,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:33:24,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:33:24,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:33:24,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:33:24,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:33:24,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:33:24,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:33:24,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:33:24,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:33:24,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:33:24,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:33:24,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (1/1) ... [2021-10-13 07:33:24,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:33:24,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:33:24,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:33:24,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:33:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:33:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:33:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:33:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:33:24,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:33:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-13 07:33:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:33:25,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:33:25,149 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 07:33:25,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:25 BoogieIcfgContainer [2021-10-13 07:33:25,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:33:25,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:33:25,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:33:25,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:33:25,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:33:24" (1/3) ... [2021-10-13 07:33:25,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208dd076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:33:25, skipping insertion in model container [2021-10-13 07:33:25,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:24" (2/3) ... [2021-10-13 07:33:25,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208dd076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:33:25, skipping insertion in model container [2021-10-13 07:33:25,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:25" (3/3) ... [2021-10-13 07:33:25,185 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-13 07:33:25,190 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:33:25,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:33:25,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:33:25,277 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 07:33:25,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:33:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 07:33:25,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:33:25,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:25,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:25,301 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:25,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-13 07:33:25,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:25,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037345418] [2021-10-13 07:33:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:25,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:25,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:25,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:25,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:33:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:25,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:33:25,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:25,545 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 07:33:25,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:25,621 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 07:33:25,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:25,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037345418] [2021-10-13 07:33:25,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037345418] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:25,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:25,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:33:25,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529907565] [2021-10-13 07:33:25,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:33:25,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:33:25,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:33:25,652 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 07:33:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:25,685 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-13 07:33:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:33:25,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 07:33:25,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:25,698 INFO L225 Difference]: With dead ends: 82 [2021-10-13 07:33:25,699 INFO L226 Difference]: Without dead ends: 43 [2021-10-13 07:33:25,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 07:33:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-13 07:33:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-13 07:33:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 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 07:33:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-13 07:33:25,768 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-13 07:33:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:25,769 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-13 07:33:25,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 07:33:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-13 07:33:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:33:25,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:25,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:25,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:25,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:25,993 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:26,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-13 07:33:26,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:26,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127833795] [2021-10-13 07:33:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:26,001 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:26,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:26,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:33:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:26,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:33:26,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:26,166 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 07:33:26,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:26,224 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 07:33:26,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:26,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127833795] [2021-10-13 07:33:26,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127833795] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:26,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:26,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:33:26,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491384333] [2021-10-13 07:33:26,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:33:26,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:33:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:33:26,229 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 07:33:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:26,274 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-13 07:33:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:33:26,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-10-13 07:33:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:26,276 INFO L225 Difference]: With dead ends: 82 [2021-10-13 07:33:26,276 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 07:33:26,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:33:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 07:33:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-13 07:33:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 states have internal predecessors, (60), 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 07:33:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-13 07:33:26,284 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-13 07:33:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:26,284 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-13 07:33:26,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 07:33:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-13 07:33:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:33:26,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:26,286 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 07:33:26,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:26,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:26,498 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:26,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:26,499 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-13 07:33:26,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:26,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697208358] [2021-10-13 07:33:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:26,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:26,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:26,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:26,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:33:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:26,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:33:26,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:26,658 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 07:33:26,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:26,716 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 07:33:26,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:26,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697208358] [2021-10-13 07:33:26,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697208358] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:26,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:26,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:33:26,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052483735] [2021-10-13 07:33:26,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:33:26,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:33:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:33:26,739 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 07:33:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:26,817 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-10-13 07:33:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:33:26,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 07:33:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:26,820 INFO L225 Difference]: With dead ends: 96 [2021-10-13 07:33:26,820 INFO L226 Difference]: Without dead ends: 83 [2021-10-13 07:33:26,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:33:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-13 07:33:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2021-10-13 07:33:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 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 07:33:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-13 07:33:26,830 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-13 07:33:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:26,831 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-13 07:33:26,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 07:33:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-13 07:33:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:33:26,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:26,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:26,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:27,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:27,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:27,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-13 07:33:27,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:27,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60214137] [2021-10-13 07:33:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:27,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:27,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:27,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:33:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:27,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:27,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:27,453 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 07:33:27,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:27,625 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 07:33:27,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:27,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60214137] [2021-10-13 07:33:27,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60214137] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:27,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:27,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-13 07:33:27,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739093275] [2021-10-13 07:33:27,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:33:27,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:33:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:33:27,632 INFO L87 Difference]: Start difference. First operand 47 states and 62 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 07:33:28,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:28,078 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-13 07:33:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:33:28,079 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 21 [2021-10-13 07:33:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:28,081 INFO L225 Difference]: With dead ends: 149 [2021-10-13 07:33:28,081 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 07:33:28,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 199.9ms TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:33:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 07:33:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-13 07:33:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 74 states have internal predecessors, (102), 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 07:33:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-13 07:33:28,105 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-13 07:33:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:28,106 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-13 07:33:28,106 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 07:33:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-13 07:33:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:33:28,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:28,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:28,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:33:28,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:28,322 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:28,322 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-13 07:33:28,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:28,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136028904] [2021-10-13 07:33:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:28,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:28,324 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:28,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:33:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:28,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:28,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:29,150 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 07:33:29,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:29,351 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 07:33:29,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:29,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136028904] [2021-10-13 07:33:29,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136028904] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:29,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:29,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-13 07:33:29,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228076176] [2021-10-13 07:33:29,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 07:33:29,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 07:33:29,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:33:29,354 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 07:33:30,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:30,428 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-13 07:33:30,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 07:33:30,429 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 07:33:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:30,431 INFO L225 Difference]: With dead ends: 180 [2021-10-13 07:33:30,431 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 07:33:30,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 662.7ms TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:33:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 07:33:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-13 07:33:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 88 states have internal predecessors, (121), 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 07:33:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-13 07:33:30,455 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-13 07:33:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:30,456 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-13 07:33:30,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 07:33:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-13 07:33:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:33:30,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:30,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:30,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:30,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:30,658 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:30,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:30,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-13 07:33:30,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:30,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454882269] [2021-10-13 07:33:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:30,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:30,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:30,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:33:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:30,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:30,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:30,988 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 07:33:30,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:31,105 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 07:33:31,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:31,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454882269] [2021-10-13 07:33:31,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454882269] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:31,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:31,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-13 07:33:31,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579240329] [2021-10-13 07:33:31,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:33:31,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:33:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:33:31,110 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 07:33:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:31,744 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-13 07:33:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:33:31,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 23 [2021-10-13 07:33:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:31,746 INFO L225 Difference]: With dead ends: 166 [2021-10-13 07:33:31,747 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 07:33:31,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 200.1ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:33:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 07:33:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-13 07:33:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 88 states have internal predecessors, (120), 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 07:33:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-13 07:33:31,760 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-13 07:33:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:31,760 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-13 07:33:31,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 07:33:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-13 07:33:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:33:31,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:31,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:31,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:31,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:31,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-13 07:33:31,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:31,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657250763] [2021-10-13 07:33:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:31,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:31,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:31,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:31,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:33:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:32,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:33:32,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:32,210 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 07:33:32,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:32,265 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 07:33:32,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:32,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657250763] [2021-10-13 07:33:32,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657250763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:32,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:32,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:33:32,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989138523] [2021-10-13 07:33:32,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:33:32,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:32,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:33:32,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:33:32,270 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 07:33:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:32,344 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2021-10-13 07:33:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:33:32,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 24 [2021-10-13 07:33:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:32,346 INFO L225 Difference]: With dead ends: 157 [2021-10-13 07:33:32,346 INFO L226 Difference]: Without dead ends: 141 [2021-10-13 07:33:32,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:33:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-13 07:33:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2021-10-13 07:33:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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 07:33:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-13 07:33:32,374 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-13 07:33:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:32,375 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-13 07:33:32,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 07:33:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-13 07:33:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:33:32,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:32,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:32,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:32,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:32,593 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:32,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:32,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-13 07:33:32,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:32,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134196145] [2021-10-13 07:33:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:32,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:32,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:32,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:33:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:32,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:33:32,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:32,785 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 07:33:32,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:32,840 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 07:33:32,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:32,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134196145] [2021-10-13 07:33:32,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134196145] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:32,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:32,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:33:32,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650561386] [2021-10-13 07:33:32,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:33:32,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:33:32,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:33:32,851 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 07:33:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:32,885 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-13 07:33:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:33:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-10-13 07:33:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:32,889 INFO L225 Difference]: With dead ends: 96 [2021-10-13 07:33:32,889 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 07:33:32,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:33:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 07:33:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-13 07:33:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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 07:33:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-13 07:33:32,910 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-13 07:33:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:32,911 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-13 07:33:32,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 07:33:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-13 07:33:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:33:32,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:32,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:32,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:33,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:33,132 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:33,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-13 07:33:33,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:33,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735302074] [2021-10-13 07:33:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:33,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:33,135 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:33,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:33:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:33,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:33,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:33,559 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 07:33:33,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:33,707 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 07:33:33,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:33,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735302074] [2021-10-13 07:33:33,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735302074] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:33,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:33,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-13 07:33:33,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423618466] [2021-10-13 07:33:33,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:33:33,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:33:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:33:33,711 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:34,103 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-13 07:33:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:33:34,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:33:34,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:34,104 INFO L225 Difference]: With dead ends: 131 [2021-10-13 07:33:34,104 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 07:33:34,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 201.5ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:33:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 07:33:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-13 07:33:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 88 states have internal predecessors, (118), 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 07:33:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-13 07:33:34,112 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-13 07:33:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:34,112 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-13 07:33:34,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-13 07:33:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:33:34,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:34,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:34,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:34,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:34,327 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:34,328 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-13 07:33:34,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:34,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379900690] [2021-10-13 07:33:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:34,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:34,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:34,330 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:34,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:33:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:34,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:33:34,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:34,677 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 07:33:34,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:34,804 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 07:33:34,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:34,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379900690] [2021-10-13 07:33:34,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379900690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:34,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:34,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-10-13 07:33:34,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411013195] [2021-10-13 07:33:34,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 07:33:34,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:34,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 07:33:34,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:33:34,806 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:35,256 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-13 07:33:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:33:35,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:33:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:35,257 INFO L225 Difference]: With dead ends: 114 [2021-10-13 07:33:35,258 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 07:33:35,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 235.3ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:33:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 07:33:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-13 07:33:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 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 07:33:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-13 07:33:35,265 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-13 07:33:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:35,266 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-13 07:33:35,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-13 07:33:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:33:35,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:35,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:35,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:35,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:35,480 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:35,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-13 07:33:35,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:35,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470509337] [2021-10-13 07:33:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:35,481 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:35,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:35,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:35,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:33:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:35,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:35,857 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 07:33:35,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:35,978 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 07:33:35,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:35,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470509337] [2021-10-13 07:33:35,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470509337] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:35,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:35,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-13 07:33:35,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048663583] [2021-10-13 07:33:35,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:33:35,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:33:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:33:35,980 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 07:33:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:36,241 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-13 07:33:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:33:36,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:33:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:36,243 INFO L225 Difference]: With dead ends: 84 [2021-10-13 07:33:36,243 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 07:33:36,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 182.0ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:33:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 07:33:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 07:33:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-13 07:33:36,250 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-13 07:33:36,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:36,251 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-13 07:33:36,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 07:33:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-13 07:33:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 07:33:36,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:36,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:36,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:36,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:36,474 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:36,475 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-13 07:33:36,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:36,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041867274] [2021-10-13 07:33:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:36,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:36,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:36,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:36,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:33:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:36,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:33:36,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:36,912 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 07:33:36,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:37,428 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 07:33:37,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:37,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041867274] [2021-10-13 07:33:37,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041867274] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:37,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:37,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:33:37,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732950849] [2021-10-13 07:33:37,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:33:37,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:33:37,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:33:37,432 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 07:33:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:37,739 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-13 07:33:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:33:37,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 07:33:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:37,741 INFO L225 Difference]: With dead ends: 82 [2021-10-13 07:33:37,741 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 07:33:37,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 428.0ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:33:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 07:33:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 07:33:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-13 07:33:37,747 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-13 07:33:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:37,748 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-13 07:33:37,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 07:33:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-13 07:33:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 07:33:37,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:37,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:37,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:37,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:37,958 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:37,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:37,958 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-13 07:33:37,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:37,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118865396] [2021-10-13 07:33:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:37,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:37,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:37,960 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:37,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:33:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:38,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:38,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:38,750 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 07:33:38,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:39,150 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 07:33:39,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:39,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118865396] [2021-10-13 07:33:39,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118865396] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:39,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:39,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 07:33:39,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685813714] [2021-10-13 07:33:39,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:33:39,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:39,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:33:39,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:33:39,153 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 07:33:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:40,745 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-13 07:33:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 07:33:40,746 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 07:33:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:40,747 INFO L225 Difference]: With dead ends: 154 [2021-10-13 07:33:40,747 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 07:33:40,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1065.7ms TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:33:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 07:33:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-10-13 07:33:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 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 07:33:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-10-13 07:33:40,754 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2021-10-13 07:33:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:40,755 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-10-13 07:33:40,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 07:33:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-10-13 07:33:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:33:40,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:40,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:40,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:40,969 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:40,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-13 07:33:40,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:40,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104516322] [2021-10-13 07:33:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:40,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:40,974 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:40,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:33:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:41,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 07:33:41,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:41,709 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 07:33:41,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:42,019 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 07:33:42,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:42,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104516322] [2021-10-13 07:33:42,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104516322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:42,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:42,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-10-13 07:33:42,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26802322] [2021-10-13 07:33:42,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 07:33:42,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 07:33:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:33:42,022 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 07:33:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:43,884 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-10-13 07:33:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 07:33:43,885 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 27 [2021-10-13 07:33:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:43,886 INFO L225 Difference]: With dead ends: 195 [2021-10-13 07:33:43,886 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 07:33:43,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1435.3ms TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 07:33:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 07:33:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-13 07:33:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 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 07:33:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-13 07:33:43,894 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-13 07:33:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:43,894 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-13 07:33:43,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 07:33:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-13 07:33:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:33:43,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:43,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:43,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:44,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:44,109 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:44,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-13 07:33:44,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:44,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859322658] [2021-10-13 07:33:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:44,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:44,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:44,112 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:44,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:33:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 07:33:44,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:44,840 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 07:33:44,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:45,104 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 07:33:45,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:45,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859322658] [2021-10-13 07:33:45,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859322658] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:45,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:45,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-10-13 07:33:45,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890594198] [2021-10-13 07:33:45,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:33:45,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:33:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:33:45,106 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 07:33:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:46,053 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-10-13 07:33:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:33:46,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 07:33:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:46,055 INFO L225 Difference]: With dead ends: 125 [2021-10-13 07:33:46,055 INFO L226 Difference]: Without dead ends: 101 [2021-10-13 07:33:46,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 753.5ms TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-10-13 07:33:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-13 07:33:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2021-10-13 07:33:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-13 07:33:46,062 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-13 07:33:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:46,062 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-13 07:33:46,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 07:33:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-13 07:33:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:33:46,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:46,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:46,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:46,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:46,274 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:46,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:46,274 INFO L82 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-13 07:33:46,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:46,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87538954] [2021-10-13 07:33:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:46,275 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:46,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:46,277 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:46,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:33:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:46,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:33:46,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:46,834 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 07:33:46,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:47,297 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 07:33:47,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:47,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87538954] [2021-10-13 07:33:47,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87538954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:47,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:47,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:33:47,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525817812] [2021-10-13 07:33:47,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:33:47,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:33:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:33:47,300 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 07:33:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:48,754 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-13 07:33:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:33:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 32 [2021-10-13 07:33:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:48,755 INFO L225 Difference]: With dead ends: 52 [2021-10-13 07:33:48,755 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 07:33:48,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 632.0ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:33:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 07:33:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 07:33:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 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 07:33:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-13 07:33:48,762 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-13 07:33:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:48,762 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-13 07:33:48,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 07:33:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-13 07:33:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:33:48,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:48,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:48,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:48,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:48,978 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:48,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-13 07:33:48,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:48,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199721260] [2021-10-13 07:33:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:48,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:48,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:48,980 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:48,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:33:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:49,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:33:49,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:49,499 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 07:33:49,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:49,808 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 07:33:49,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:49,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199721260] [2021-10-13 07:33:49,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199721260] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:49,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:49,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 07:33:49,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455623672] [2021-10-13 07:33:49,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:33:49,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:33:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:33:49,811 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 07:33:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:50,458 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-13 07:33:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:33:50,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 32 [2021-10-13 07:33:50,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:50,459 INFO L225 Difference]: With dead ends: 55 [2021-10-13 07:33:50,459 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 07:33:50,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 548.6ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:33:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 07:33:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-13 07:33:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 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 07:33:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-13 07:33:50,465 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-13 07:33:50,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:50,466 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-13 07:33:50,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 07:33:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-13 07:33:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:33:50,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:50,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:50,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:50,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:50,667 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:50,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-13 07:33:50,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:50,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936961592] [2021-10-13 07:33:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:50,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:50,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:50,669 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:50,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:33:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:51,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:33:51,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:51,817 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 07:33:51,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:52,089 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 07:33:52,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:52,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936961592] [2021-10-13 07:33:52,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936961592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:52,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:52,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-13 07:33:52,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186211490] [2021-10-13 07:33:52,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:33:52,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:52,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:33:52,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:33:52,091 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 07:33:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:52,822 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2021-10-13 07:33:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:33:52,822 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 33 [2021-10-13 07:33:52,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:52,823 INFO L225 Difference]: With dead ends: 79 [2021-10-13 07:33:52,823 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 07:33:52,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 816.3ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:33:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 07:33:52,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-10-13 07:33:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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 07:33:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-13 07:33:52,829 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2021-10-13 07:33:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:52,829 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-13 07:33:52,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 07:33:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-13 07:33:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 07:33:52,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:52,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:52,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:53,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:53,045 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:33:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:53,045 INFO L82 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-13 07:33:53,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:53,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211820605] [2021-10-13 07:33:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:53,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:53,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:53,047 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:53,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:33:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:53,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:33:53,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:53,476 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 07:33:53,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:53,534 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 07:33:53,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:53,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211820605] [2021-10-13 07:33:53,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211820605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:53,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:53,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:33:53,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436800077] [2021-10-13 07:33:53,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:33:53,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:53,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:33:53,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:33:53,536 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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 07:33:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:53,571 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-13 07:33:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:33:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) Word has length 35 [2021-10-13 07:33:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:53,572 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:33:53,572 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:33:53,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:33:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:33:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:33:53,573 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 07:33:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:33:53,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-13 07:33:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:53,574 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:33:53,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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 07:33:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:33:53,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:33:53,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:33:53,577 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:33:53,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:53,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:53,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:33:53,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:53,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:53,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:54,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-13 07:34:00,784 INFO L857 garLoopResultBuilder]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2021-10-13 07:34:00,785 INFO L857 garLoopResultBuilder]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2021-10-13 07:34:00,785 INFO L857 garLoopResultBuilder]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2021-10-13 07:34:00,785 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-13 07:34:00,785 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-13 07:34:00,785 INFO L857 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-10-13 07:34:00,785 INFO L860 garLoopResultBuilder]: At program point L88(lines 61 89) the Hoare annotation is: true [2021-10-13 07:34:00,786 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-13 07:34:00,786 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-13 07:34:00,786 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-13 07:34:00,786 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:34:00,786 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2021-10-13 07:34:00,786 INFO L857 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-13 07:34:00,786 INFO L857 garLoopResultBuilder]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2021-10-13 07:34:00,787 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:34:00,787 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-13 07:34:00,787 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-13 07:34:00,787 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-13 07:34:00,787 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-13 07:34:00,787 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0 (not .cse1) .cse2) (and (not .cse0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) .cse2 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-13 07:34:00,787 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-13 07:34:00,787 INFO L857 garLoopResultBuilder]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse1) (and .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-13 07:34:00,788 INFO L857 garLoopResultBuilder]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0 (not .cse1) .cse2) (and (not .cse0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) .cse2 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmin_float_~x (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))))) [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (let ((.cse2 (= ULTIMATE.start_fmin_float_~y .cse1)) (.cse3 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (or (and .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse1 .cse1)) .cse2 .cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse3 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not .cse0))))) [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L59-1(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse2 (not |ULTIMATE.start_main_#t~short16|)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse1) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2 .cse1))) [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L59-3(line 59) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not |ULTIMATE.start_main_#t~short16|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-13 07:34:00,788 INFO L853 garLoopResultBuilder]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq .cse0 .cse0)) .cse1 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) (and (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse2 .cse1 .cse3) (and (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y .cse0) .cse2 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse1 .cse3))) [2021-10-13 07:34:00,789 INFO L853 garLoopResultBuilder]: At program point L59-5(line 59) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) .cse1 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse2) (and |ULTIMATE.start_main_#t~short24| .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse1 .cse2))) [2021-10-13 07:34:00,789 INFO L853 garLoopResultBuilder]: At program point L59-6(line 59) the Hoare annotation is: (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) (and (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|))) [2021-10-13 07:34:00,789 INFO L853 garLoopResultBuilder]: At program point L59-7(line 59) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) [2021-10-13 07:34:00,789 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-13 07:34:00,789 INFO L857 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-13 07:34:00,789 INFO L857 garLoopResultBuilder]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2021-10-13 07:34:00,789 INFO L857 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-13 07:34:00,789 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse0 .cse1) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y .cse2) .cse0 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse2 .cse2)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)))) [2021-10-13 07:34:00,794 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:34:00,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:34:00 BoogieIcfgContainer [2021-10-13 07:34:00,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:34:00,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:34:00,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:34:00,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:34:00,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:25" (3/4) ... [2021-10-13 07:34:00,826 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:34:00,838 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-13 07:34:00,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:34:00,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:34:00,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:34:00,864 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-13 07:34:00,865 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2021-10-13 07:34:00,865 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && 0bv32 == \result) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) [2021-10-13 07:34:00,866 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && aux-!isnan_float(x) && isnan_float(y)-aux) && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) [2021-10-13 07:34:00,866 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) [2021-10-13 07:34:00,867 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-10-13 07:34:00,867 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y)) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) [2021-10-13 07:34:00,867 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || ((((y == x && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result) [2021-10-13 07:34:00,868 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (((((~fp.eq~FLOAT(y, y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result)) || (((((((~fp.eq~FLOAT(res, y) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) && 1bv32 == \result) [2021-10-13 07:34:00,868 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && 1bv32 == \result) || ((((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(y, y)) && !(0bv32 == \result)) [2021-10-13 07:34:00,869 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) [2021-10-13 07:34:00,869 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-13 07:34:00,869 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) [2021-10-13 07:34:00,890 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:34:00,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:34:00,892 INFO L168 Benchmark]: Toolchain (without parser) took 36739.12 ms. Allocated memory was 60.8 MB in the beginning and 90.2 MB in the end (delta: 29.4 MB). Free memory was 38.6 MB in the beginning and 46.1 MB in the end (delta: -7.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:00,893 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:34:00,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.37 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 43.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:00,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.45 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 41.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:00,894 INFO L168 Benchmark]: Boogie Preprocessor took 36.81 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 40.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:00,895 INFO L168 Benchmark]: RCFGBuilder took 514.12 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 25.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:00,895 INFO L168 Benchmark]: TraceAbstraction took 35642.46 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 54.6 MB in the beginning and 51.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:00,895 INFO L168 Benchmark]: Witness Printer took 69.02 ms. Allocated memory is still 90.2 MB. Free memory was 51.1 MB in the beginning and 46.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:00,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.37 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 43.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.45 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 41.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.81 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 40.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 514.12 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 25.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35642.46 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 54.6 MB in the beginning and 51.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. * Witness Printer took 69.02 ms. Allocated memory is still 90.2 MB. Free memory was 51.1 MB in the beginning and 46.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 4.2 MB. 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 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 83]: 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, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 35525.3ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 33.9ms, AutomataDifference: 11201.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6997.5ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1146 SDtfs, 2600 SDslu, 4552 SDs, 0 SdLazy, 2015 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5636.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 774 SyntacticMatches, 6 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 7443.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 231.6ms AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 617 HoareAnnotationTreeSize, 14 FomulaSimplifications, 643151 FormulaSimplificationTreeSizeReduction, 779.0ms HoareSimplificationTime, 14 FomulaSimplificationsInter, 19731 FormulaSimplificationTreeSizeReductionInter, 6209.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 219.1ms SsaConstructionTime, 867.8ms SatisfiabilityAnalysisTime, 8801.2ms InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 31 QuantifiedInterpolants, 3559 SizeOfPredicates, 145 NumberOfNonLiveVariables, 1646 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || ((((y == x && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && 0bv32 == \result) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y)) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (((((~fp.eq~FLOAT(y, y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result)) || (((((((~fp.eq~FLOAT(res, y) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) && 1bv32 == \result) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && 1bv32 == \result) || ((((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(y, y)) && !(0bv32 == \result)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && aux-!isnan_float(x) && isnan_float(y)-aux) && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:34:00,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5463081c-4530-40ef-a661-fcbe98c7e1ff/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...