./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs --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 32adbfac5f3e3ea232180afd045da0027ca6d993 ............................................................................................................................................................................................................................................................................................................................... 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs --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 32adbfac5f3e3ea232180afd045da0027ca6d993 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:41,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:41,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:41,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:41,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:41,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:41,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:41,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:41,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:41,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:41,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:41,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:41,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:41,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:41,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:41,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:41,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:41,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:41,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:41,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:41,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:41,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:41,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:41,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:41,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:41,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:41,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:41,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:41,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:41,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:41,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:41,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:41,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:41,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:41,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:41,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:41,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:41,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:41,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:41,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:41,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:41,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:41,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:41,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:41,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:41,489 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:41,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:41,490 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:41,490 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:41,490 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:41,490 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:41,490 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:41,491 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:41,491 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:41,491 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:41,491 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:41,492 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:41,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:41,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:41,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:41,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:41,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:41,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:41,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:41,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:41,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:41,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:41,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:41,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:41,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:41,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:41,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:41,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:41,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:41,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:41,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:41,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:41,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:41,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:41,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:41,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:41,503 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2021-10-16 01:59:41,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:41,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:41,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:41,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:41,862 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:41,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-16 01:59:41,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/572c11f2c/d2d362a91fa74f70b0bbfc04b0aa8476/FLAGa02900c61 [2021-10-16 01:59:42,368 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:42,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-16 01:59:42,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/572c11f2c/d2d362a91fa74f70b0bbfc04b0aa8476/FLAGa02900c61 [2021-10-16 01:59:42,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/572c11f2c/d2d362a91fa74f70b0bbfc04b0aa8476 [2021-10-16 01:59:42,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:42,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:42,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:42,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:42,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:42,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:42" (1/1) ... [2021-10-16 01:59:42,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1505bf53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:42, skipping insertion in model container [2021-10-16 01:59:42,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:42" (1/1) ... [2021-10-16 01:59:42,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:42,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:42,982 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-16 01:59:42,985 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-16 01:59:42,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:42,995 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:43,018 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-16 01:59:43,019 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-16 01:59:43,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:43,034 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:43,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43 WrapperNode [2021-10-16 01:59:43,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:43,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:43,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:43,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:43,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:43,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:43,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:43,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:43,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:43,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:43,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:43,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:43,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (1/1) ... [2021-10-16 01:59:43,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:43,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:43,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:43,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:43,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 01:59:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 01:59:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:59:44,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:44,228 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-16 01:59:44,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44 BoogieIcfgContainer [2021-10-16 01:59:44,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:44,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:44,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:44,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:44,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:42" (1/3) ... [2021-10-16 01:59:44,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7810851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:44, skipping insertion in model container [2021-10-16 01:59:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:43" (2/3) ... [2021-10-16 01:59:44,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7810851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:44, skipping insertion in model container [2021-10-16 01:59:44,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44" (3/3) ... [2021-10-16 01:59:44,246 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-10-16 01:59:44,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:44,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 01:59:44,323 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:44,330 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 [2021-10-16 01:59:44,331 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 01:59:44,344 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) [2021-10-16 01:59:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 01:59:44,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:44,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:44,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:44,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1154142022, now seen corresponding path program 1 times [2021-10-16 01:59:44,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:44,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940097054] [2021-10-16 01:59:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:44,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:44,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:44,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940097054] [2021-10-16 01:59:44,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940097054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:44,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:44,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:59:44,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702854643] [2021-10-16 01:59:44,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:44,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:44,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:44,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:44,575 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) [2021-10-16 01:59:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:44,590 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-10-16 01:59:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:44,592 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 [2021-10-16 01:59:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:44,600 INFO L225 Difference]: With dead ends: 36 [2021-10-16 01:59:44,601 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 01:59:44,603 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 [2021-10-16 01:59:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 01:59:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 01:59:44,633 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) [2021-10-16 01:59:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-16 01:59:44,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-10-16 01:59:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:44,635 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-16 01:59:44,636 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) [2021-10-16 01:59:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-16 01:59:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:59:44,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:44,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:44,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:59:44,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:44,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:44,639 INFO L82 PathProgramCache]: Analyzing trace with hash -749756590, now seen corresponding path program 1 times [2021-10-16 01:59:44,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:44,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104294934] [2021-10-16 01:59:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:44,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:44,782 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:59:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:44,901 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 01:59:44,901 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:59:44,903 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:59:44,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:59:44,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 01:59:44,912 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:59:44,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:59:44 BoogieIcfgContainer [2021-10-16 01:59:44,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:59:44,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:59:44,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:59:44,952 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:59:44,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:44" (3/4) ... [2021-10-16 01:59:44,956 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 01:59:44,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:59:44,958 INFO L168 Benchmark]: Toolchain (without parser) took 2178.14 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 61.4 MB in the beginning and 65.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:44,959 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 69.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:44,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.10 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 71.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:44,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.82 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 69.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:44,961 INFO L168 Benchmark]: Boogie Preprocessor took 44.34 ms. Allocated memory is still 96.5 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:44,962 INFO L168 Benchmark]: RCFGBuilder took 1082.90 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 67.5 MB in the beginning and 96.5 MB in the end (delta: -29.0 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:44,963 INFO L168 Benchmark]: TraceAbstraction took 716.99 ms. Allocated memory is still 123.7 MB. Free memory was 95.8 MB in the beginning and 65.7 MB in the end (delta: 30.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:44,964 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 123.7 MB. Free memory was 65.7 MB in the beginning and 65.0 MB in the end (delta: 690.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:44,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 69.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.10 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 71.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.82 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 69.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.34 ms. Allocated memory is still 96.5 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1082.90 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 67.5 MB in the beginning and 96.5 MB in the end (delta: -29.0 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 716.99 ms. Allocated memory is still 123.7 MB. Free memory was 95.8 MB in the beginning and 65.7 MB in the end (delta: 30.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 123.7 MB. Free memory was 65.7 MB in the beginning and 65.0 MB in the end (delta: 690.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 76]: 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 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L57] return x != x; [L70] EXPR !isnan_float(x) && isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] reach_error() - UnprovableResult [Line: 82]: 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: 589.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 44.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.3ms, 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: 13.2ms SsaConstructionTime, 176.8ms SatisfiabilityAnalysisTime, 62.0ms 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 [2021-10-16 01:59:45,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 01:59:47,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:47,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:47,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:47,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:47,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:47,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:47,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:47,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:47,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:47,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:47,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:47,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:47,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:47,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:47,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:47,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:47,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:47,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:47,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:47,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:47,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:47,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:47,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:47,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:47,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:47,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:47,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:47,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:47,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:47,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:47,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:47,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:47,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:47,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:47,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:47,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:47,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:47,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:47,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:47,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:47,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:47,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:47,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:47,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:47,809 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:47,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:47,809 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:47,810 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:47,810 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:47,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:47,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:47,813 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:47,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:47,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:47,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:47,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:47,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:47,814 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:47,814 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:47,814 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:47,815 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:47,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:47,815 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:47,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:47,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:47,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:47,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:47,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:47,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:47,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:47,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:47,817 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:47,818 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:47,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:47,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:47,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:47,819 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2021-10-16 01:59:48,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:48,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:48,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:48,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:48,231 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:48,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-16 01:59:48,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/1de420109/2e71ced6f0944abcafc00ba4debf090d/FLAG27cec7c92 [2021-10-16 01:59:48,921 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:48,921 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-16 01:59:48,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/1de420109/2e71ced6f0944abcafc00ba4debf090d/FLAG27cec7c92 [2021-10-16 01:59:49,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/data/1de420109/2e71ced6f0944abcafc00ba4debf090d [2021-10-16 01:59:49,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:49,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:49,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:49,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:49,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:49,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ee7127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49, skipping insertion in model container [2021-10-16 01:59:49,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:49,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:49,522 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-16 01:59:49,526 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-16 01:59:49,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:49,541 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:49,573 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-16 01:59:49,574 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_10f44ab4-92fc-4c8c-82b3-15a39b2475de/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-16 01:59:49,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:49,593 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:49,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49 WrapperNode [2021-10-16 01:59:49,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:49,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:49,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:49,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:49,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:49,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:49,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:49,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:49,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:49,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:49,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:49,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:49,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (1/1) ... [2021-10-16 01:59:49,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:49,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:49,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 01:59:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 01:59:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:59:50,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:50,308 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-16 01:59:50,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:50 BoogieIcfgContainer [2021-10-16 01:59:50,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:50,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:50,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:50,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:50,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:49" (1/3) ... [2021-10-16 01:59:50,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4549c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:50, skipping insertion in model container [2021-10-16 01:59:50,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:49" (2/3) ... [2021-10-16 01:59:50,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4549c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:50, skipping insertion in model container [2021-10-16 01:59:50,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:50" (3/3) ... [2021-10-16 01:59:50,319 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-10-16 01:59:50,325 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:50,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 01:59:50,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:50,384 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 [2021-10-16 01:59:50,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 01:59:50,400 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) [2021-10-16 01:59:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 01:59:50,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:50,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:50,407 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-16 01:59:50,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:50,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244706650] [2021-10-16 01:59:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:50,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:50,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:50,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:50,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:59:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:50,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:59:50,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:50,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:50,767 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:50,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244706650] [2021-10-16 01:59:50,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244706650] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:50,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:50,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:59:50,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758714824] [2021-10-16 01:59:50,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:50,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:50,795 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) [2021-10-16 01:59:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:50,830 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-16 01:59:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:50,833 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 [2021-10-16 01:59:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:50,843 INFO L225 Difference]: With dead ends: 82 [2021-10-16 01:59:50,844 INFO L226 Difference]: Without dead ends: 43 [2021-10-16 01:59:50,847 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 [2021-10-16 01:59:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-16 01:59:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-16 01:59:50,889 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) [2021-10-16 01:59:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-16 01:59:50,894 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-16 01:59:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:50,895 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-16 01:59:50,896 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) [2021-10-16 01:59:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-16 01:59:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 01:59:50,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:50,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:50,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:51,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:51,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:51,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-16 01:59:51,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:51,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68852204] [2021-10-16 01:59:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:51,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:51,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:51,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:51,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:59:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:51,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:59:51,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:51,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:51,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:51,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68852204] [2021-10-16 01:59:51,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68852204] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:51,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:51,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:59:51,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064776651] [2021-10-16 01:59:51,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:59:51,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:51,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:59:51,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:59:51,410 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) [2021-10-16 01:59:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:51,506 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-16 01:59:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:59:51,507 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 [2021-10-16 01:59:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:51,508 INFO L225 Difference]: With dead ends: 82 [2021-10-16 01:59:51,509 INFO L226 Difference]: Without dead ends: 50 [2021-10-16 01:59:51,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:59:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-16 01:59:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-16 01:59:51,518 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) [2021-10-16 01:59:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-16 01:59:51,519 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-16 01:59:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:51,520 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-16 01:59:51,520 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) [2021-10-16 01:59:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-16 01:59:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 01:59:51,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:51,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:51,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:51,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:51,735 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:51,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-16 01:59:51,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:51,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151870150] [2021-10-16 01:59:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:51,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:51,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:51,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:51,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 01:59:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:51,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:59:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:51,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:51,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:51,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151870150] [2021-10-16 01:59:51,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151870150] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:51,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:51,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 01:59:51,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640486926] [2021-10-16 01:59:51,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:59:51,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:59:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:59:51,979 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) [2021-10-16 01:59:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:52,063 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-10-16 01:59:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:59:52,063 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 [2021-10-16 01:59:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:52,065 INFO L225 Difference]: With dead ends: 96 [2021-10-16 01:59:52,066 INFO L226 Difference]: Without dead ends: 83 [2021-10-16 01:59:52,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:59:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-16 01:59:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2021-10-16 01:59:52,073 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) [2021-10-16 01:59:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-16 01:59:52,075 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-16 01:59:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:52,075 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-16 01:59:52,076 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) [2021-10-16 01:59:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-16 01:59:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 01:59:52,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:52,078 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] [2021-10-16 01:59:52,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:52,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:52,296 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:52,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-16 01:59:52,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:52,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670702438] [2021-10-16 01:59:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:52,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:52,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:52,300 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:52,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 01:59:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:52,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:59:52,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:52,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:52,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:52,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670702438] [2021-10-16 01:59:52,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670702438] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:52,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:52,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-16 01:59:52,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501950267] [2021-10-16 01:59:52,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 01:59:52,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 01:59:52,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-16 01:59:52,943 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) [2021-10-16 01:59:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:53,394 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-16 01:59:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:59:53,395 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 [2021-10-16 01:59:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:53,397 INFO L225 Difference]: With dead ends: 149 [2021-10-16 01:59:53,397 INFO L226 Difference]: Without dead ends: 140 [2021-10-16 01:59:53,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 201.8ms TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-16 01:59:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-16 01:59:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-16 01:59:53,412 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) [2021-10-16 01:59:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-16 01:59:53,413 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-16 01:59:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:53,414 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-16 01:59:53,414 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) [2021-10-16 01:59:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-16 01:59:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 01:59:53,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:53,416 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] [2021-10-16 01:59:53,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:53,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:53,631 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:53,631 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-16 01:59:53,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:53,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920030702] [2021-10-16 01:59:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:53,632 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:53,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:53,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 01:59:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:53,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:59:53,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:54,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:54,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:54,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920030702] [2021-10-16 01:59:54,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920030702] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:54,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:54,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-16 01:59:54,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875460685] [2021-10-16 01:59:54,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 01:59:54,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 01:59:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-16 01:59:54,752 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) [2021-10-16 01:59:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:55,747 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-16 01:59:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-16 01:59:55,748 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 [2021-10-16 01:59:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:55,750 INFO L225 Difference]: With dead ends: 180 [2021-10-16 01:59:55,751 INFO L226 Difference]: Without dead ends: 178 [2021-10-16 01:59:55,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 646.9ms TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-10-16 01:59:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-16 01:59:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-16 01:59:55,763 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) [2021-10-16 01:59:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-16 01:59:55,765 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-16 01:59:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:55,765 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-16 01:59:55,766 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) [2021-10-16 01:59:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-16 01:59:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 01:59:55,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:55,767 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] [2021-10-16 01:59:55,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:55,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:55,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:55,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-16 01:59:55,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:55,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765815615] [2021-10-16 01:59:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:55,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:55,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:55,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:55,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 01:59:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:56,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:59:56,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:56,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:56,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:56,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765815615] [2021-10-16 01:59:56,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765815615] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:56,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:56,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-16 01:59:56,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363371704] [2021-10-16 01:59:56,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 01:59:56,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 01:59:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-16 01:59:56,396 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) [2021-10-16 01:59:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:56,940 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-16 01:59:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 01:59:56,940 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 [2021-10-16 01:59:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:56,941 INFO L225 Difference]: With dead ends: 166 [2021-10-16 01:59:56,942 INFO L226 Difference]: Without dead ends: 131 [2021-10-16 01:59:56,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 181.4ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-16 01:59:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-16 01:59:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-16 01:59:56,953 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) [2021-10-16 01:59:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-16 01:59:56,954 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-16 01:59:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:56,954 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-16 01:59:56,954 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) [2021-10-16 01:59:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-16 01:59:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 01:59:56,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:56,956 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] [2021-10-16 01:59:56,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:57,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:57,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:57,170 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-16 01:59:57,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:57,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795207467] [2021-10-16 01:59:57,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:57,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:57,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:57,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 01:59:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:57,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:59:57,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:57,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:57,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:57,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795207467] [2021-10-16 01:59:57,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795207467] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:57,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:57,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 01:59:57,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793643355] [2021-10-16 01:59:57,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:59:57,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:57,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:59:57,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:59:57,467 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) [2021-10-16 01:59:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:57,593 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2021-10-16 01:59:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:59:57,598 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 [2021-10-16 01:59:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:57,599 INFO L225 Difference]: With dead ends: 157 [2021-10-16 01:59:57,600 INFO L226 Difference]: Without dead ends: 141 [2021-10-16 01:59:57,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:59:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-16 01:59:57,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2021-10-16 01:59:57,611 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) [2021-10-16 01:59:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-16 01:59:57,612 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-16 01:59:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:57,613 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-16 01:59:57,613 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) [2021-10-16 01:59:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-16 01:59:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 01:59:57,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:57,615 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] [2021-10-16 01:59:57,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:57,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:57,827 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:57,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-16 01:59:57,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:57,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671015814] [2021-10-16 01:59:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:57,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:57,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:57,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 01:59:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:57,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 01:59:57,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:58,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:58,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:58,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671015814] [2021-10-16 01:59:58,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671015814] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:58,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:58,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:59:58,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468422166] [2021-10-16 01:59:58,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:59:58,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:59:58,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:59:58,069 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) [2021-10-16 01:59:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:58,108 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-16 01:59:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:59:58,109 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 [2021-10-16 01:59:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:58,110 INFO L225 Difference]: With dead ends: 96 [2021-10-16 01:59:58,110 INFO L226 Difference]: Without dead ends: 94 [2021-10-16 01:59:58,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:59:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-16 01:59:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-16 01:59:58,124 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) [2021-10-16 01:59:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-16 01:59:58,125 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-16 01:59:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:58,126 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-16 01:59:58,126 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) [2021-10-16 01:59:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-16 01:59:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 01:59:58,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:58,133 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] [2021-10-16 01:59:58,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:58,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:58,346 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:58,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-16 01:59:58,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:58,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900969983] [2021-10-16 01:59:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:58,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:58,348 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:58,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 01:59:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:58,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:59:58,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:58,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:58,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:58,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900969983] [2021-10-16 01:59:58,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900969983] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:58,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:58,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-16 01:59:58,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469605258] [2021-10-16 01:59:58,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 01:59:58,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 01:59:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-16 01:59:58,807 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) [2021-10-16 01:59:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:59,437 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-16 01:59:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 01:59:59,438 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 [2021-10-16 01:59:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:59,439 INFO L225 Difference]: With dead ends: 131 [2021-10-16 01:59:59,439 INFO L226 Difference]: Without dead ends: 118 [2021-10-16 01:59:59,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 170.8ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-16 01:59:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-16 01:59:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-16 01:59:59,447 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) [2021-10-16 01:59:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-16 01:59:59,448 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-16 01:59:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:59,448 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-16 01:59:59,449 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) [2021-10-16 01:59:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-16 01:59:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 01:59:59,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:59,450 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] [2021-10-16 01:59:59,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:59,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:59,650 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:59,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:59,651 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-16 01:59:59,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:59,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145072492] [2021-10-16 01:59:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:59,652 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:59,653 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:59,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 01:59:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:59,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 01:59:59,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:00,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:00,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:00,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145072492] [2021-10-16 02:00:00,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145072492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:00,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:00,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-10-16 02:00:00,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519062844] [2021-10-16 02:00:00,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:00:00,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:00:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:00:00,126 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) [2021-10-16 02:00:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:00,609 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-16 02:00:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:00:00,611 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 [2021-10-16 02:00:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:00,612 INFO L225 Difference]: With dead ends: 114 [2021-10-16 02:00:00,612 INFO L226 Difference]: Without dead ends: 78 [2021-10-16 02:00:00,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 228.6ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:00:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-16 02:00:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-16 02:00:00,618 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) [2021-10-16 02:00:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-16 02:00:00,619 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-16 02:00:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:00,619 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-16 02:00:00,620 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) [2021-10-16 02:00:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-16 02:00:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:00:00,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:00,621 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] [2021-10-16 02:00:00,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:00,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:00,834 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-16 02:00:00,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:00,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343536515] [2021-10-16 02:00:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:00,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:00,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:00,835 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:00,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:00:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:01,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:00:01,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:01,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:01,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:01,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343536515] [2021-10-16 02:00:01,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343536515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:01,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:01,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-16 02:00:01,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250517089] [2021-10-16 02:00:01,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:00:01,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:00:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:00:01,329 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) [2021-10-16 02:00:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:01,617 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-16 02:00:01,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:00:01,618 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 [2021-10-16 02:00:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:01,618 INFO L225 Difference]: With dead ends: 84 [2021-10-16 02:00:01,618 INFO L226 Difference]: Without dead ends: 74 [2021-10-16 02:00:01,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 182.6ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:00:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-16 02:00:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-16 02:00:01,624 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) [2021-10-16 02:00:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-16 02:00:01,624 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-16 02:00:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:01,625 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-16 02:00:01,625 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) [2021-10-16 02:00:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-16 02:00:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:00:01,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:01,626 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] [2021-10-16 02:00:01,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:01,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:01,826 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-16 02:00:01,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:01,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231528161] [2021-10-16 02:00:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:01,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:01,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:01,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:01,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:00:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:02,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:00:02,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:02,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:02,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:02,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231528161] [2021-10-16 02:00:02,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231528161] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:02,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:02,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:00:02,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421828939] [2021-10-16 02:00:02,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:00:02,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:02,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:00:02,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:00:02,688 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) [2021-10-16 02:00:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:03,022 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-16 02:00:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:00:03,023 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 [2021-10-16 02:00:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:03,023 INFO L225 Difference]: With dead ends: 82 [2021-10-16 02:00:03,024 INFO L226 Difference]: Without dead ends: 74 [2021-10-16 02:00:03,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 377.2ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:00:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-16 02:00:03,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-16 02:00:03,029 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) [2021-10-16 02:00:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-16 02:00:03,030 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-16 02:00:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:03,030 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-16 02:00:03,030 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) [2021-10-16 02:00:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-16 02:00:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:00:03,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:03,031 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] [2021-10-16 02:00:03,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:03,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:03,249 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-16 02:00:03,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:03,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497752173] [2021-10-16 02:00:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:03,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:03,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:03,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:00:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:03,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:00:03,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:03,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:04,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:04,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497752173] [2021-10-16 02:00:04,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497752173] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:04,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:04,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-16 02:00:04,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104966076] [2021-10-16 02:00:04,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 02:00:04,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 02:00:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:00:04,296 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) [2021-10-16 02:00:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:07,537 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-16 02:00:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:00:07,538 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 [2021-10-16 02:00:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:07,540 INFO L225 Difference]: With dead ends: 154 [2021-10-16 02:00:07,540 INFO L226 Difference]: Without dead ends: 134 [2021-10-16 02:00:07,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 730.0ms TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-16 02:00:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-16 02:00:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-10-16 02:00:07,548 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) [2021-10-16 02:00:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-10-16 02:00:07,549 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2021-10-16 02:00:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:07,549 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-10-16 02:00:07,550 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) [2021-10-16 02:00:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-10-16 02:00:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:00:07,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:07,551 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] [2021-10-16 02:00:07,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:07,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:07,770 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:07,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-16 02:00:07,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:07,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4019312] [2021-10-16 02:00:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:07,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:07,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:07,773 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:07,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:00:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:08,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:00:08,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:08,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:08,930 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:08,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4019312] [2021-10-16 02:00:08,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4019312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:08,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:08,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-10-16 02:00:08,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887047492] [2021-10-16 02:00:08,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:00:08,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:00:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:00:08,932 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) [2021-10-16 02:00:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:10,896 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-10-16 02:00:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-16 02:00:10,897 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 [2021-10-16 02:00:10,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:10,899 INFO L225 Difference]: With dead ends: 195 [2021-10-16 02:00:10,899 INFO L226 Difference]: Without dead ends: 158 [2021-10-16 02:00:10,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1579.4ms TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-10-16 02:00:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-16 02:00:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-16 02:00:10,907 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) [2021-10-16 02:00:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-16 02:00:10,908 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-16 02:00:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:10,908 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-16 02:00:10,909 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) [2021-10-16 02:00:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-16 02:00:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:00:10,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:10,910 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] [2021-10-16 02:00:10,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-16 02:00:11,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:11,126 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-16 02:00:11,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:11,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601985311] [2021-10-16 02:00:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:11,127 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:11,128 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:11,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:00:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:11,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:00:11,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:11,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:12,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:12,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601985311] [2021-10-16 02:00:12,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601985311] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:12,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:12,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-10-16 02:00:12,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517879625] [2021-10-16 02:00:12,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:00:12,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:00:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:00:12,203 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) [2021-10-16 02:00:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:13,437 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-10-16 02:00:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:00:13,438 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 [2021-10-16 02:00:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:13,439 INFO L225 Difference]: With dead ends: 125 [2021-10-16 02:00:13,439 INFO L226 Difference]: Without dead ends: 101 [2021-10-16 02:00:13,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 734.5ms TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-10-16 02:00:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-16 02:00:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2021-10-16 02:00:13,445 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) [2021-10-16 02:00:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-16 02:00:13,445 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-16 02:00:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:13,446 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-16 02:00:13,446 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) [2021-10-16 02:00:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-16 02:00:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:00:13,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:13,447 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] [2021-10-16 02:00:13,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:13,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:13,669 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:13,669 INFO L82 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-16 02:00:13,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:13,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972840982] [2021-10-16 02:00:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:13,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:13,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:13,673 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:13,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:00:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:13,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:00:13,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:14,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:14,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:14,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972840982] [2021-10-16 02:00:14,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972840982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:14,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:14,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:00:14,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702468028] [2021-10-16 02:00:14,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:00:14,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:00:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:00:14,740 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) [2021-10-16 02:00:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:15,633 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-16 02:00:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:00:15,634 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 [2021-10-16 02:00:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:15,634 INFO L225 Difference]: With dead ends: 52 [2021-10-16 02:00:15,634 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 02:00:15,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 835.1ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:00:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 02:00:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-16 02:00:15,640 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) [2021-10-16 02:00:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-16 02:00:15,641 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-16 02:00:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:15,641 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-16 02:00:15,641 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) [2021-10-16 02:00:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-16 02:00:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:00:15,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:15,642 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] [2021-10-16 02:00:15,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:15,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:15,858 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:15,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-16 02:00:15,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:15,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118579057] [2021-10-16 02:00:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:15,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:15,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:15,861 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:15,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:00:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:16,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:00:16,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:16,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:16,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:16,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118579057] [2021-10-16 02:00:16,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118579057] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:16,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:16,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-16 02:00:16,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116128477] [2021-10-16 02:00:16,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:00:16,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:00:16,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:00:16,914 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) [2021-10-16 02:00:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:17,654 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-16 02:00:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:00:17,657 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 [2021-10-16 02:00:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:17,657 INFO L225 Difference]: With dead ends: 55 [2021-10-16 02:00:17,657 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 02:00:17,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 687.8ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:00:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 02:00:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-16 02:00:17,664 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) [2021-10-16 02:00:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-16 02:00:17,664 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-16 02:00:17,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:17,665 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-16 02:00:17,665 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) [2021-10-16 02:00:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-16 02:00:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:00:17,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:17,666 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] [2021-10-16 02:00:17,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-16 02:00:17,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:17,869 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:17,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:17,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-16 02:00:17,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:17,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446815494] [2021-10-16 02:00:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:17,870 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:17,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:17,870 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:17,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 02:00:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:18,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:00:18,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:18,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:19,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:19,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446815494] [2021-10-16 02:00:19,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446815494] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:19,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:19,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 02:00:19,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004217930] [2021-10-16 02:00:19,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:00:19,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:00:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:00:19,183 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) [2021-10-16 02:00:19,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:19,930 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2021-10-16 02:00:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:00:19,931 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 [2021-10-16 02:00:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:19,932 INFO L225 Difference]: With dead ends: 79 [2021-10-16 02:00:19,932 INFO L226 Difference]: Without dead ends: 61 [2021-10-16 02:00:19,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 460.9ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:00:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-16 02:00:19,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-10-16 02:00:19,939 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) [2021-10-16 02:00:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-16 02:00:19,940 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2021-10-16 02:00:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:19,941 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-16 02:00:19,941 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) [2021-10-16 02:00:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-16 02:00:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:00:19,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:19,942 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] [2021-10-16 02:00:19,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:20,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:20,160 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:20,161 INFO L82 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-16 02:00:20,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:20,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175895398] [2021-10-16 02:00:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:20,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:20,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:20,164 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:20,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 02:00:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:20,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:00:20,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:20,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:20,735 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:20,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175895398] [2021-10-16 02:00:20,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175895398] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:20,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:20,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:00:20,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661816271] [2021-10-16 02:00:20,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:00:20,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:20,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:00:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:00:20,740 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) [2021-10-16 02:00:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:20,771 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-16 02:00:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:00:20,771 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 [2021-10-16 02:00:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:20,771 INFO L225 Difference]: With dead ends: 39 [2021-10-16 02:00:20,771 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:00:20,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:00:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:00:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:00:20,772 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) [2021-10-16 02:00:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:00:20,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-16 02:00:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:20,772 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:00:20,773 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) [2021-10-16 02:00:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:00:20,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:00:20,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:20,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:20,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-16 02:00:20,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:20,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:00:20,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:21,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:27,206 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2021-10-16 02:00:27,206 INFO L857 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2021-10-16 02:00:27,206 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 42) no Hoare annotation was computed. [2021-10-16 02:00:27,206 INFO L857 garLoopResultBuilder]: For program point L69-2(line 69) no Hoare annotation was computed. [2021-10-16 02:00:27,206 INFO L857 garLoopResultBuilder]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2021-10-16 02:00:27,206 INFO L857 garLoopResultBuilder]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2021-10-16 02:00:27,206 INFO L857 garLoopResultBuilder]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2021-10-16 02:00:27,207 INFO L857 garLoopResultBuilder]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2021-10-16 02:00:27,207 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:00:27,207 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:00:27,207 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-16 02:00:27,207 INFO L857 garLoopResultBuilder]: For program point L53-2(line 53) no Hoare annotation was computed. [2021-10-16 02:00:27,207 INFO L853 garLoopResultBuilder]: At program point L53-3(lines 45 54) the Hoare annotation is: (let ((.cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~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)))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse1) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y .cse2) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse2 .cse2)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)))) [2021-10-16 02:00:27,208 INFO L857 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-16 02:00:27,208 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-16 02:00:27,208 INFO L860 garLoopResultBuilder]: At program point L87(lines 59 88) the Hoare annotation is: true [2021-10-16 02:00:27,208 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2021-10-16 02:00:27,208 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-16 02:00:27,209 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2021-10-16 02:00:27,209 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-16 02:00:27,209 INFO L857 garLoopResultBuilder]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2021-10-16 02:00:27,209 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:00:27,209 INFO L853 garLoopResultBuilder]: At program point L57(line 57) 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|)))) [2021-10-16 02:00:27,210 INFO L853 garLoopResultBuilder]: At program point L57-1(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short15| (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))) [2021-10-16 02:00:27,210 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2021-10-16 02:00:27,210 INFO L853 garLoopResultBuilder]: At program point L57-2(line 57) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short19|)) (.cse1 (not |ULTIMATE.start_main_#t~short15|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 (not .cse2) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse1 .cse2))) [2021-10-16 02:00:27,210 INFO L853 garLoopResultBuilder]: At program point L57-3(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short18| (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~short19|) (not |ULTIMATE.start_main_#t~short15|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-16 02:00:27,211 INFO L853 garLoopResultBuilder]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.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)))) (or (and (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y .cse1) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse2 .cse3 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse2 .cse3) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (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 .cse1 .cse1)) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)))) [2021-10-16 02:00:27,211 INFO L853 garLoopResultBuilder]: At program point L57-5(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and |ULTIMATE.start_main_#t~short23| (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_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))) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse2 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and |ULTIMATE.start_main_#t~short23| .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse2))) [2021-10-16 02:00:27,211 INFO L853 garLoopResultBuilder]: At program point L57-6(line 57) the Hoare annotation is: (or (and (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~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))) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0))) [2021-10-16 02:00:27,211 INFO L853 garLoopResultBuilder]: At program point L57-7(line 57) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~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))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)) [2021-10-16 02:00:27,211 INFO L857 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-16 02:00:27,211 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 42) no Hoare annotation was computed. [2021-10-16 02:00:27,211 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:00:27,211 INFO L857 garLoopResultBuilder]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2021-10-16 02:00:27,212 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2021-10-16 02:00:27,212 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse0 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (not .cse0) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0 (not .cse2)))) [2021-10-16 02:00:27,212 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2021-10-16 02:00:27,212 INFO L857 garLoopResultBuilder]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2021-10-16 02:00:27,212 INFO L853 garLoopResultBuilder]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y) .cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-16 02:00:27,212 INFO L857 garLoopResultBuilder]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2021-10-16 02:00:27,212 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 52) no Hoare annotation was computed. [2021-10-16 02:00:27,212 INFO L857 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2021-10-16 02:00:27,212 INFO L853 garLoopResultBuilder]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse1 (not .cse2)) (and (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (not .cse1) .cse0 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmax_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)))))) [2021-10-16 02:00:27,213 INFO L853 garLoopResultBuilder]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.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)))) (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_fmax_float_~y .cse2)) (.cse4 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (or (and .cse0 (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1 (not (fp.eq .cse2 .cse2)) .cse3 .cse4 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse3 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) .cse4 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (not .cse0))))) [2021-10-16 02:00:27,213 INFO L857 garLoopResultBuilder]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2021-10-16 02:00:27,213 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-16 02:00:27,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:00:27,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:00:27 BoogieIcfgContainer [2021-10-16 02:00:27,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:00:27,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:00:27,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:00:27,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:00:27,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:50" (3/4) ... [2021-10-16 02:00:27,270 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:00:27,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-16 02:00:27,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:00:27,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:00:27,301 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:00:27,329 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-16 02:00:27,330 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) [2021-10-16 02:00:27,330 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(y, y) && !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(x, x)) && 1bv32 == \result) || (((0bv32 == \result && !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(x, x)) [2021-10-16 02:00:27,331 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)))) && !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(x, x) [2021-10-16 02:00:27,331 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-16 02:00:27,332 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-10-16 02:00:27,332 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && y == \result) && !~fp.eq~FLOAT(x, x)) || (((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y))) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) [2021-10-16 02:00:27,332 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) || ((((~fp.eq~FLOAT(x, x) && y == y) && !~fp.eq~FLOAT(x, x)) && y == x) && 1bv32 == \result) [2021-10-16 02:00:27,333 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.eq~FLOAT(res, y) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) || (((((~fp.eq~FLOAT(y, y) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result)) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && ~fp.eq~FLOAT(\result, x)) [2021-10-16 02:00:27,333 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && y == y) && !~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 == x) && 1bv32 == \result) || ((((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) && !(0bv32 == \result)) [2021-10-16 02:00:27,334 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 == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) [2021-10-16 02:00:27,334 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && ~fp.eq~FLOAT(\result, x)) [2021-10-16 02:00:27,335 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) [2021-10-16 02:00:27,370 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:00:27,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:00:27,373 INFO L168 Benchmark]: Toolchain (without parser) took 38078.49 ms. Allocated memory was 56.6 MB in the beginning and 104.9 MB in the end (delta: 48.2 MB). Free memory was 34.4 MB in the beginning and 43.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:27,373 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:27,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.03 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 38.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:27,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 36.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:27,375 INFO L168 Benchmark]: Boogie Preprocessor took 34.61 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 35.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:27,376 INFO L168 Benchmark]: RCFGBuilder took 634.27 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.0 MB in the beginning and 47.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:27,377 INFO L168 Benchmark]: TraceAbstraction took 36953.19 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 47.5 MB in the beginning and 49.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:27,377 INFO L168 Benchmark]: Witness Printer took 104.90 ms. Allocated memory is still 104.9 MB. Free memory was 49.1 MB in the beginning and 43.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:27,380 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 56.6 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.03 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 38.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 36.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.61 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 35.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 634.27 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.0 MB in the beginning and 47.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 36953.19 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 47.5 MB in the beginning and 49.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. * Witness Printer took 104.90 ms. Allocated memory is still 104.9 MB. Free memory was 49.1 MB in the beginning and 43.9 MB in the end (delta: 5.2 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: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 82]: 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: 36842.6ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 33.3ms, AutomataDifference: 13068.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6229.1ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1146 SDtfs, 2600 SDslu, 4552 SDs, 0 SdLazy, 2015 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7721.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 774 SyntacticMatches, 6 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 7114.9ms 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: 180.5ms AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 616 HoareAnnotationTreeSize, 14 FomulaSimplifications, 584044 FormulaSimplificationTreeSizeReduction, 1037.5ms HoareSimplificationTime, 14 FomulaSimplificationsInter, 78839 FormulaSimplificationTreeSizeReductionInter, 5181.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 245.6ms SsaConstructionTime, 875.5ms SatisfiabilityAnalysisTime, 9003.9ms 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: 22]: Loop Invariant Derived loop invariant: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && y == y) && !~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 == x) && 1bv32 == \result) || ((((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) && !(0bv32 == \result)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((~fp.eq~FLOAT(res, y) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) || (((((~fp.eq~FLOAT(y, y) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result)) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && y == \result) && !~fp.eq~FLOAT(x, x)) || (((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y))) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: 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)))) && !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(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(y, y) && !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(x, x)) && 1bv32 == \result) || (((0bv32 == \result && !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(x, x)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) || ((((~fp.eq~FLOAT(x, x) && y == y) && !~fp.eq~FLOAT(x, x)) && y == x) && 1bv32 == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 57]: 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: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~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]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:00:27,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f44ab4-92fc-4c8c-82b3-15a39b2475de/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...