./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1861bbcf625dcaaa7e8868961cd7536f31aeba5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1861bbcf625dcaaa7e8868961cd7536f31aeba5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:01:58,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:01:58,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:01:58,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:01:58,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:01:58,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:01:58,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:01:58,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:01:58,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:01:58,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:01:58,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:01:58,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:01:58,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:01:58,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:01:58,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:01:58,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:01:58,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:01:59,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:01:59,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:01:59,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:01:59,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:01:59,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:01:59,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:01:59,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:01:59,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:01:59,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:01:59,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:01:59,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:01:59,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:01:59,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:01:59,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:01:59,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:01:59,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:01:59,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:01:59,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:01:59,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:01:59,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:01:59,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:01:59,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:01:59,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:01:59,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:01:59,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:01:59,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:01:59,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:01:59,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:01:59,091 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:01:59,091 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:01:59,091 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:01:59,092 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:01:59,092 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:01:59,092 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:01:59,096 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:01:59,098 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:01:59,098 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:01:59,098 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:01:59,099 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:01:59,099 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:01:59,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:01:59,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:01:59,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:01:59,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:01:59,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:01:59,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:01:59,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:01:59,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:01:59,102 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:01:59,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:01:59,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:01:59,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:01:59,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:01:59,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:01:59,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:01:59,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:01:59,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:01:59,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:01:59,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:01:59,106 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:01:59,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:01:59,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:01:59,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:01:59,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:01:59,107 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_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1861bbcf625dcaaa7e8868961cd7536f31aeba5 [2021-10-13 07:01:59,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:01:59,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:01:59,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:01:59,437 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:01:59,438 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:01:59,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-13 07:01:59,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/47b647610/efafecd8ffd944fc9a7363aedcef8703/FLAG729a732f2 [2021-10-13 07:02:00,022 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:02:00,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-13 07:02:00,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/47b647610/efafecd8ffd944fc9a7363aedcef8703/FLAG729a732f2 [2021-10-13 07:02:00,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/47b647610/efafecd8ffd944fc9a7363aedcef8703 [2021-10-13 07:02:00,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:02:00,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:02:00,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:00,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:02:00,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:02:00,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:00,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d68fc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00, skipping insertion in model container [2021-10-13 07:02:00,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:00,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:02:00,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:02:00,715 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_77c137aa-8a42-4154-a49d-0dc472da9fe3/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44465,44478] [2021-10-13 07:02:00,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:00,732 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:02:00,828 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_77c137aa-8a42-4154-a49d-0dc472da9fe3/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44465,44478] [2021-10-13 07:02:00,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:00,845 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:02:00,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00 WrapperNode [2021-10-13 07:02:00,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:00,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:00,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:02:00,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:02:00,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:00,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:00,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:00,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:02:00,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:02:00,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:02:00,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:00,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:00,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:00,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:01,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:01,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:01,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:01,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:02:01,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:02:01,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:02:01,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:02:01,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (1/1) ... [2021-10-13 07:02:01,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:02:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:01,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:02:01,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:02:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:02:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:02:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:02:01,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:02:01,308 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:02:01,964 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:02:01,965 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:02:02,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:02:02,362 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:02:02,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:02 BoogieIcfgContainer [2021-10-13 07:02:02,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:02:02,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:02:02,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:02:02,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:02:02,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:02:00" (1/3) ... [2021-10-13 07:02:02,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291b0f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:02, skipping insertion in model container [2021-10-13 07:02:02,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:00" (2/3) ... [2021-10-13 07:02:02,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291b0f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:02, skipping insertion in model container [2021-10-13 07:02:02,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:02" (3/3) ... [2021-10-13 07:02:02,377 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_8.cil.c [2021-10-13 07:02:02,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:02:02,383 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:02:02,434 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:02:02,440 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:02:02,441 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:02:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 106 states have (on average 1.7735849056603774) internal successors, (188), 107 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:02,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:02:02,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:02,469 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, 1, 1] [2021-10-13 07:02:02,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 855625889, now seen corresponding path program 1 times [2021-10-13 07:02:02,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:02,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195532893] [2021-10-13 07:02:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:02,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:02,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:02,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195532893] [2021-10-13 07:02:02,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195532893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:02,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:02,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:02:02,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847690619] [2021-10-13 07:02:02,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:02,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:02,771 INFO L87 Difference]: Start difference. First operand has 108 states, 106 states have (on average 1.7735849056603774) internal successors, (188), 107 states have internal predecessors, (188), 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 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:02,975 INFO L93 Difference]: Finished difference Result 235 states and 408 transitions. [2021-10-13 07:02:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:02,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 07:02:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:02,993 INFO L225 Difference]: With dead ends: 235 [2021-10-13 07:02:02,993 INFO L226 Difference]: Without dead ends: 123 [2021-10-13 07:02:02,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-13 07:02:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-10-13 07:02:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.4833333333333334) internal successors, (178), 120 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2021-10-13 07:02:03,066 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 37 [2021-10-13 07:02:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:03,067 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2021-10-13 07:02:03,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2021-10-13 07:02:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 07:02:03,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:03,072 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:03,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:02:03,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash -878393056, now seen corresponding path program 1 times [2021-10-13 07:02:03,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:03,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730392852] [2021-10-13 07:02:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:03,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:03,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:03,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730392852] [2021-10-13 07:02:03,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730392852] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:03,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:03,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:03,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225299604] [2021-10-13 07:02:03,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:03,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:03,209 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:03,373 INFO L93 Difference]: Finished difference Result 261 states and 390 transitions. [2021-10-13 07:02:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-10-13 07:02:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:03,381 INFO L225 Difference]: With dead ends: 261 [2021-10-13 07:02:03,382 INFO L226 Difference]: Without dead ends: 142 [2021-10-13 07:02:03,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-13 07:02:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2021-10-13 07:02:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4388489208633093) internal successors, (200), 139 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 200 transitions. [2021-10-13 07:02:03,412 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 200 transitions. Word has length 51 [2021-10-13 07:02:03,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:03,413 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 200 transitions. [2021-10-13 07:02:03,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 200 transitions. [2021-10-13 07:02:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:02:03,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:03,423 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:03,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:02:03,425 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:03,430 INFO L82 PathProgramCache]: Analyzing trace with hash -346401837, now seen corresponding path program 1 times [2021-10-13 07:02:03,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:03,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048758439] [2021-10-13 07:02:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:03,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:02:03,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:03,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048758439] [2021-10-13 07:02:03,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048758439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:03,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:03,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:02:03,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500951897] [2021-10-13 07:02:03,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:02:03,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:02:03,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:02:03,666 INFO L87 Difference]: Start difference. First operand 140 states and 200 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:03,993 INFO L93 Difference]: Finished difference Result 352 states and 528 transitions. [2021-10-13 07:02:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:02:03,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 68 [2021-10-13 07:02:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:03,997 INFO L225 Difference]: With dead ends: 352 [2021-10-13 07:02:03,997 INFO L226 Difference]: Without dead ends: 214 [2021-10-13 07:02:04,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:02:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-13 07:02:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2021-10-13 07:02:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.3756345177664975) internal successors, (271), 197 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 271 transitions. [2021-10-13 07:02:04,026 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 271 transitions. Word has length 68 [2021-10-13 07:02:04,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:04,029 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 271 transitions. [2021-10-13 07:02:04,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 271 transitions. [2021-10-13 07:02:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 07:02:04,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:04,033 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:04,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:02:04,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:04,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:04,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1785913903, now seen corresponding path program 1 times [2021-10-13 07:02:04,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:04,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050572898] [2021-10-13 07:02:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:04,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 07:02:04,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:04,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050572898] [2021-10-13 07:02:04,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050572898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:04,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:04,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:04,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568436430] [2021-10-13 07:02:04,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:04,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:04,120 INFO L87 Difference]: Start difference. First operand 198 states and 271 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:04,240 INFO L93 Difference]: Finished difference Result 409 states and 564 transitions. [2021-10-13 07:02:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:04,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 77 [2021-10-13 07:02:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:04,243 INFO L225 Difference]: With dead ends: 409 [2021-10-13 07:02:04,243 INFO L226 Difference]: Without dead ends: 213 [2021-10-13 07:02:04,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:04,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-13 07:02:04,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2021-10-13 07:02:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3666666666666667) internal successors, (287), 210 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 287 transitions. [2021-10-13 07:02:04,254 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 287 transitions. Word has length 77 [2021-10-13 07:02:04,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:04,254 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 287 transitions. [2021-10-13 07:02:04,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 287 transitions. [2021-10-13 07:02:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-13 07:02:04,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:04,256 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:04,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:02:04,257 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:04,258 INFO L82 PathProgramCache]: Analyzing trace with hash -612309937, now seen corresponding path program 1 times [2021-10-13 07:02:04,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:04,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257057767] [2021-10-13 07:02:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:04,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-13 07:02:04,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:04,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257057767] [2021-10-13 07:02:04,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257057767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:04,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:04,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:04,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456394196] [2021-10-13 07:02:04,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:04,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:04,319 INFO L87 Difference]: Start difference. First operand 211 states and 287 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:04,501 INFO L93 Difference]: Finished difference Result 488 states and 678 transitions. [2021-10-13 07:02:04,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:04,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 88 [2021-10-13 07:02:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:04,506 INFO L225 Difference]: With dead ends: 488 [2021-10-13 07:02:04,506 INFO L226 Difference]: Without dead ends: 276 [2021-10-13 07:02:04,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-13 07:02:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2021-10-13 07:02:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.3874538745387455) internal successors, (376), 271 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 376 transitions. [2021-10-13 07:02:04,520 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 376 transitions. Word has length 88 [2021-10-13 07:02:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:04,521 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 376 transitions. [2021-10-13 07:02:04,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 376 transitions. [2021-10-13 07:02:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-13 07:02:04,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:04,530 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:04,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:02:04,530 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:04,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:04,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1545494385, now seen corresponding path program 1 times [2021-10-13 07:02:04,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:04,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372978958] [2021-10-13 07:02:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:04,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:02:04,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:04,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372978958] [2021-10-13 07:02:04,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372978958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:04,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:04,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:04,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911522238] [2021-10-13 07:02:04,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:04,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:04,651 INFO L87 Difference]: Start difference. First operand 272 states and 376 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:04,788 INFO L93 Difference]: Finished difference Result 575 states and 805 transitions. [2021-10-13 07:02:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 88 [2021-10-13 07:02:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:04,791 INFO L225 Difference]: With dead ends: 575 [2021-10-13 07:02:04,792 INFO L226 Difference]: Without dead ends: 305 [2021-10-13 07:02:04,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-10-13 07:02:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 295. [2021-10-13 07:02:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.3673469387755102) internal successors, (402), 294 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 402 transitions. [2021-10-13 07:02:04,805 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 402 transitions. Word has length 88 [2021-10-13 07:02:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:04,806 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 402 transitions. [2021-10-13 07:02:04,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 402 transitions. [2021-10-13 07:02:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-13 07:02:04,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:04,815 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:04,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:02:04,816 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:04,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:04,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1253155076, now seen corresponding path program 1 times [2021-10-13 07:02:04,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:04,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672955401] [2021-10-13 07:02:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:04,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-13 07:02:04,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:04,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672955401] [2021-10-13 07:02:04,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672955401] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:04,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:04,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:04,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414094358] [2021-10-13 07:02:04,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:04,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:04,913 INFO L87 Difference]: Start difference. First operand 295 states and 402 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:05,061 INFO L93 Difference]: Finished difference Result 621 states and 858 transitions. [2021-10-13 07:02:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 112 [2021-10-13 07:02:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:05,064 INFO L225 Difference]: With dead ends: 621 [2021-10-13 07:02:05,065 INFO L226 Difference]: Without dead ends: 328 [2021-10-13 07:02:05,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:05,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-13 07:02:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2021-10-13 07:02:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.347962382445141) internal successors, (430), 319 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 430 transitions. [2021-10-13 07:02:05,082 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 430 transitions. Word has length 112 [2021-10-13 07:02:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:05,083 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 430 transitions. [2021-10-13 07:02:05,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 430 transitions. [2021-10-13 07:02:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-13 07:02:05,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:05,085 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:05,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:02:05,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:05,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash -94341201, now seen corresponding path program 1 times [2021-10-13 07:02:05,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:05,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454699405] [2021-10-13 07:02:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:05,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 07:02:05,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:05,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454699405] [2021-10-13 07:02:05,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454699405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:05,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:05,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:05,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119334988] [2021-10-13 07:02:05,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:05,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:05,168 INFO L87 Difference]: Start difference. First operand 320 states and 430 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:05,379 INFO L93 Difference]: Finished difference Result 645 states and 868 transitions. [2021-10-13 07:02:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 126 [2021-10-13 07:02:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:05,384 INFO L225 Difference]: With dead ends: 645 [2021-10-13 07:02:05,384 INFO L226 Difference]: Without dead ends: 326 [2021-10-13 07:02:05,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-13 07:02:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2021-10-13 07:02:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.3416149068322982) internal successors, (432), 322 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 432 transitions. [2021-10-13 07:02:05,403 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 432 transitions. Word has length 126 [2021-10-13 07:02:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:05,404 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 432 transitions. [2021-10-13 07:02:05,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 432 transitions. [2021-10-13 07:02:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-13 07:02:05,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:05,407 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:05,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:02:05,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:05,408 INFO L82 PathProgramCache]: Analyzing trace with hash -947133020, now seen corresponding path program 1 times [2021-10-13 07:02:05,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:05,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520988251] [2021-10-13 07:02:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:05,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:02:05,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:05,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520988251] [2021-10-13 07:02:05,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520988251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:05,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:05,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069392122] [2021-10-13 07:02:05,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:05,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:05,486 INFO L87 Difference]: Start difference. First operand 323 states and 432 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:05,648 INFO L93 Difference]: Finished difference Result 673 states and 911 transitions. [2021-10-13 07:02:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 134 [2021-10-13 07:02:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:05,653 INFO L225 Difference]: With dead ends: 673 [2021-10-13 07:02:05,653 INFO L226 Difference]: Without dead ends: 352 [2021-10-13 07:02:05,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-13 07:02:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2021-10-13 07:02:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.32378223495702) internal successors, (462), 349 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 462 transitions. [2021-10-13 07:02:05,667 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 462 transitions. Word has length 134 [2021-10-13 07:02:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:05,668 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 462 transitions. [2021-10-13 07:02:05,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 462 transitions. [2021-10-13 07:02:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-13 07:02:05,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:05,671 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:05,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:02:05,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:05,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash -706907343, now seen corresponding path program 1 times [2021-10-13 07:02:05,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:05,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687506506] [2021-10-13 07:02:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:05,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:02:05,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:05,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687506506] [2021-10-13 07:02:05,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687506506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:05,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:05,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:02:05,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104175256] [2021-10-13 07:02:05,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:05,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:02:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:05,752 INFO L87 Difference]: Start difference. First operand 350 states and 462 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:05,919 INFO L93 Difference]: Finished difference Result 727 states and 973 transitions. [2021-10-13 07:02:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:05,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 139 [2021-10-13 07:02:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:05,922 INFO L225 Difference]: With dead ends: 727 [2021-10-13 07:02:05,922 INFO L226 Difference]: Without dead ends: 379 [2021-10-13 07:02:05,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-13 07:02:05,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-10-13 07:02:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.306878306878307) internal successors, (494), 378 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 494 transitions. [2021-10-13 07:02:05,936 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 494 transitions. Word has length 139 [2021-10-13 07:02:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:05,936 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 494 transitions. [2021-10-13 07:02:05,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 494 transitions. [2021-10-13 07:02:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-13 07:02:05,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:05,939 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:05,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:02:05,940 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash 849563690, now seen corresponding path program 1 times [2021-10-13 07:02:05,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:05,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476596636] [2021-10-13 07:02:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:05,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:02:06,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:02:06,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476596636] [2021-10-13 07:02:06,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476596636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:02:06,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485011904] [2021-10-13 07:02:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:06,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:02:06,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:06,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:02:06,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:02:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:06,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:02:06,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:02:06,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:02:07,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485011904] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:07,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [651653888] [2021-10-13 07:02:07,222 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-10-13 07:02:07,223 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:02:07,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:02:07,239 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:02:07,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:02:36,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,656 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:02:36,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:02:36,659 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:02:36,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:02:36,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-13 07:02:36,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:02:36,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:02:36,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:02:36,771 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:02:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:02:36,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:02:36,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:02:36,817 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:02:36,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:02:36,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:02:36,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:02:36,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:36,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:02:36,854 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:02:36,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:02:37,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:02:37,099 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-13 07:02:37,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1128 [2021-10-13 07:02:37,143 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:02:37,143 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1128 [2021-10-13 07:02:37,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:37,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 07:02:37,368 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_22| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:02:37,373 INFO L168 Benchmark]: Toolchain (without parser) took 36990.14 ms. Allocated memory was 86.0 MB in the beginning and 8.8 GB in the end (delta: 8.7 GB). Free memory was 50.2 MB in the beginning and 7.6 GB in the end (delta: -7.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 16.1 GB. [2021-10-13 07:02:37,373 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:02:37,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.08 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 50.0 MB in the beginning and 93.7 MB in the end (delta: -43.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:37,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.41 ms. Allocated memory is still 121.6 MB. Free memory was 93.7 MB in the beginning and 91.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:37,374 INFO L168 Benchmark]: Boogie Preprocessor took 79.42 ms. Allocated memory is still 121.6 MB. Free memory was 90.4 MB in the beginning and 88.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:37,375 INFO L168 Benchmark]: RCFGBuilder took 1314.04 ms. Allocated memory is still 121.6 MB. Free memory was 88.3 MB in the beginning and 88.3 MB in the end (delta: -38.0 kB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:37,375 INFO L168 Benchmark]: TraceAbstraction took 35003.30 ms. Allocated memory was 121.6 MB in the beginning and 8.8 GB in the end (delta: 8.7 GB). Free memory was 88.3 MB in the beginning and 7.6 GB in the end (delta: -7.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 16.1 GB. [2021-10-13 07:02:37,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.08 ms. Allocated memory was 86.0 MB in the beginning and 121.6 MB in the end (delta: 35.7 MB). Free memory was 50.0 MB in the beginning and 93.7 MB in the end (delta: -43.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.41 ms. Allocated memory is still 121.6 MB. Free memory was 93.7 MB in the beginning and 91.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.42 ms. Allocated memory is still 121.6 MB. Free memory was 90.4 MB in the beginning and 88.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1314.04 ms. Allocated memory is still 121.6 MB. Free memory was 88.3 MB in the beginning and 88.3 MB in the end (delta: -38.0 kB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35003.30 ms. Allocated memory was 121.6 MB in the beginning and 8.8 GB in the end (delta: 8.7 GB). Free memory was 88.3 MB in the beginning and 7.6 GB in the end (delta: -7.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_22| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_22|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:02:37,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:02:39,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:02:39,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:02:40,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:02:40,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:02:40,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:02:40,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:02:40,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:02:40,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:02:40,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:02:40,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:02:40,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:02:40,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:02:40,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:02:40,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:02:40,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:02:40,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:02:40,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:02:40,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:02:40,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:02:40,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:02:40,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:02:40,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:02:40,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:02:40,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:02:40,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:02:40,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:02:40,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:02:40,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:02:40,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:02:40,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:02:40,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:02:40,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:02:40,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:02:40,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:02:40,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:02:40,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:02:40,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:02:40,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:02:40,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:02:40,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:02:40,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:02:40,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:02:40,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:02:40,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:02:40,162 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:02:40,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:02:40,162 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:02:40,162 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:02:40,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:02:40,163 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:02:40,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:02:40,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:02:40,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:02:40,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:02:40,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:02:40,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:02:40,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:02:40,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:02:40,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:02:40,167 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:02:40,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:02:40,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:02:40,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:02:40,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:02:40,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:02:40,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:02:40,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:02:40,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:02:40,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:02:40,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:02:40,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:02:40,170 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:02:40,170 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:02:40,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:02:40,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:02:40,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:02:40,171 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_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1861bbcf625dcaaa7e8868961cd7536f31aeba5 [2021-10-13 07:02:40,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:02:40,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:02:40,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:02:40,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:02:40,583 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:02:40,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-13 07:02:40,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/022ab55c9/e48f2c3e05fd45e2acb41565cb164630/FLAG08b64d589 [2021-10-13 07:02:41,251 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:02:41,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-13 07:02:41,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/022ab55c9/e48f2c3e05fd45e2acb41565cb164630/FLAG08b64d589 [2021-10-13 07:02:41,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/data/022ab55c9/e48f2c3e05fd45e2acb41565cb164630 [2021-10-13 07:02:41,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:02:41,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:02:41,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:41,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:02:41,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:02:41,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:41" (1/1) ... [2021-10-13 07:02:41,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e457355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:41, skipping insertion in model container [2021-10-13 07:02:41,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:41" (1/1) ... [2021-10-13 07:02:41,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:02:41,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:02:41,933 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_77c137aa-8a42-4154-a49d-0dc472da9fe3/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44465,44478] [2021-10-13 07:02:41,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:41,974 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:02:42,054 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_77c137aa-8a42-4154-a49d-0dc472da9fe3/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44465,44478] [2021-10-13 07:02:42,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:42,071 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:02:42,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42 WrapperNode [2021-10-13 07:02:42,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:42,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:42,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:02:42,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:02:42,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:42,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:02:42,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:02:42,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:02:42,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:02:42,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:02:42,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:02:42,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:02:42,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (1/1) ... [2021-10-13 07:02:42,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:02:42,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:42,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:02:42,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:02:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:02:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:02:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:02:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:02:42,444 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:02:43,088 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:02:43,090 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:02:43,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:02:43,104 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:02:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:43 BoogieIcfgContainer [2021-10-13 07:02:43,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:02:43,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:02:43,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:02:43,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:02:43,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:02:41" (1/3) ... [2021-10-13 07:02:43,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12356c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:43, skipping insertion in model container [2021-10-13 07:02:43,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:42" (2/3) ... [2021-10-13 07:02:43,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12356c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:43, skipping insertion in model container [2021-10-13 07:02:43,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:43" (3/3) ... [2021-10-13 07:02:43,114 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_8.cil.c [2021-10-13 07:02:43,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:02:43,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:02:43,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:02:43,206 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:02:43,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:02:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7379310344827585) internal successors, (252), 146 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 07:02:43,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:43,249 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:43,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:43,258 INFO L82 PathProgramCache]: Analyzing trace with hash -737748433, now seen corresponding path program 1 times [2021-10-13 07:02:43,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:43,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076566750] [2021-10-13 07:02:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:43,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:43,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:43,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:43,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:02:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:43,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:02:43,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:43,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:43,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:43,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076566750] [2021-10-13 07:02:43,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076566750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:43,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:43,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:02:43,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702859819] [2021-10-13 07:02:43,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:43,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:43,831 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7379310344827585) internal successors, (252), 146 states have internal predecessors, (252), 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 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:44,037 INFO L93 Difference]: Finished difference Result 314 states and 538 transitions. [2021-10-13 07:02:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:44,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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) Word has length 42 [2021-10-13 07:02:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:44,050 INFO L225 Difference]: With dead ends: 314 [2021-10-13 07:02:44,050 INFO L226 Difference]: Without dead ends: 155 [2021-10-13 07:02:44,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-13 07:02:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2021-10-13 07:02:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.5298013245033113) internal successors, (231), 151 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2021-10-13 07:02:44,099 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 42 [2021-10-13 07:02:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:44,108 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2021-10-13 07:02:44,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2021-10-13 07:02:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:02:44,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:44,112 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:44,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:44,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:44,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:44,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1349662321, now seen corresponding path program 1 times [2021-10-13 07:02:44,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:44,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651314954] [2021-10-13 07:02:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:44,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:44,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:44,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:44,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:02:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:44,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:44,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:44,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:02:44,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:44,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651314954] [2021-10-13 07:02:44,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651314954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:44,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:44,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:02:44,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101624648] [2021-10-13 07:02:44,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:44,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:44,722 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:44,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:44,868 INFO L93 Difference]: Finished difference Result 321 states and 494 transitions. [2021-10-13 07:02:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:44,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) Word has length 58 [2021-10-13 07:02:44,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:44,871 INFO L225 Difference]: With dead ends: 321 [2021-10-13 07:02:44,871 INFO L226 Difference]: Without dead ends: 177 [2021-10-13 07:02:44,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-13 07:02:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2021-10-13 07:02:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.494186046511628) internal successors, (257), 172 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2021-10-13 07:02:44,888 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 58 [2021-10-13 07:02:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:44,889 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 257 transitions. [2021-10-13 07:02:44,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 257 transitions. [2021-10-13 07:02:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 07:02:44,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:44,893 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:44,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:45,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:45,104 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:45,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1638621821, now seen corresponding path program 1 times [2021-10-13 07:02:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:45,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327055609] [2021-10-13 07:02:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:45,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:45,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:45,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:02:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:45,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:45,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:02:45,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:02:45,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:45,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327055609] [2021-10-13 07:02:45,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327055609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:45,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:45,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:02:45,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352449970] [2021-10-13 07:02:45,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:02:45,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:02:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:02:45,676 INFO L87 Difference]: Start difference. First operand 173 states and 257 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:46,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:46,017 INFO L93 Difference]: Finished difference Result 432 states and 672 transitions. [2021-10-13 07:02:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:02:46,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 79 [2021-10-13 07:02:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:46,020 INFO L225 Difference]: With dead ends: 432 [2021-10-13 07:02:46,020 INFO L226 Difference]: Without dead ends: 267 [2021-10-13 07:02:46,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:02:46,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-13 07:02:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 253. [2021-10-13 07:02:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4880952380952381) internal successors, (375), 252 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 375 transitions. [2021-10-13 07:02:46,051 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 375 transitions. Word has length 79 [2021-10-13 07:02:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:46,053 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 375 transitions. [2021-10-13 07:02:46,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 375 transitions. [2021-10-13 07:02:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 07:02:46,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:46,064 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:46,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:46,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:46,278 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:46,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2025321925, now seen corresponding path program 1 times [2021-10-13 07:02:46,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:46,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022116902] [2021-10-13 07:02:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:46,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:46,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:46,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:46,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:02:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:46,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:46,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:02:46,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:02:46,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:46,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022116902] [2021-10-13 07:02:46,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022116902] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:46,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:46,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:02:46,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727921881] [2021-10-13 07:02:46,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:46,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:46,871 INFO L87 Difference]: Start difference. First operand 253 states and 375 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:47,020 INFO L93 Difference]: Finished difference Result 525 states and 785 transitions. [2021-10-13 07:02:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:47,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 80 [2021-10-13 07:02:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:47,024 INFO L225 Difference]: With dead ends: 525 [2021-10-13 07:02:47,024 INFO L226 Difference]: Without dead ends: 280 [2021-10-13 07:02:47,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:47,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-13 07:02:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 276. [2021-10-13 07:02:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.4654545454545456) internal successors, (403), 275 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 403 transitions. [2021-10-13 07:02:47,061 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 403 transitions. Word has length 80 [2021-10-13 07:02:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:47,062 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 403 transitions. [2021-10-13 07:02:47,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 403 transitions. [2021-10-13 07:02:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 07:02:47,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:47,070 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:47,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:47,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:47,285 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:47,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2008818915, now seen corresponding path program 1 times [2021-10-13 07:02:47,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:47,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309786781] [2021-10-13 07:02:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:47,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:47,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:47,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:02:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:47,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:47,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:02:47,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:02:47,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:47,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309786781] [2021-10-13 07:02:47,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309786781] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:47,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:47,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:02:47,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432317993] [2021-10-13 07:02:47,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:47,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:47,950 INFO L87 Difference]: Start difference. First operand 276 states and 403 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:48,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:48,092 INFO L93 Difference]: Finished difference Result 582 states and 861 transitions. [2021-10-13 07:02:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:48,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 101 [2021-10-13 07:02:48,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:48,095 INFO L225 Difference]: With dead ends: 582 [2021-10-13 07:02:48,096 INFO L226 Difference]: Without dead ends: 314 [2021-10-13 07:02:48,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-13 07:02:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 301. [2021-10-13 07:02:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.4433333333333334) internal successors, (433), 300 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 433 transitions. [2021-10-13 07:02:48,108 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 433 transitions. Word has length 101 [2021-10-13 07:02:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:48,109 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 433 transitions. [2021-10-13 07:02:48,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 433 transitions. [2021-10-13 07:02:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-13 07:02:48,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:48,112 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:48,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 07:02:48,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:48,323 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:48,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:48,324 INFO L82 PathProgramCache]: Analyzing trace with hash -264921093, now seen corresponding path program 1 times [2021-10-13 07:02:48,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:48,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29645242] [2021-10-13 07:02:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:48,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:48,326 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:48,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:02:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:48,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:48,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:02:48,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-13 07:02:49,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:49,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29645242] [2021-10-13 07:02:49,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29645242] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:49,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:49,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:02:49,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054254441] [2021-10-13 07:02:49,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:02:49,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:49,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:02:49,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:02:49,228 INFO L87 Difference]: Start difference. First operand 301 states and 433 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:49,519 INFO L93 Difference]: Finished difference Result 688 states and 1026 transitions. [2021-10-13 07:02:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:02:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 120 [2021-10-13 07:02:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:49,523 INFO L225 Difference]: With dead ends: 688 [2021-10-13 07:02:49,523 INFO L226 Difference]: Without dead ends: 395 [2021-10-13 07:02:49,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:02:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-10-13 07:02:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 382. [2021-10-13 07:02:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.4514435695538057) internal successors, (553), 381 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 553 transitions. [2021-10-13 07:02:49,538 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 553 transitions. Word has length 120 [2021-10-13 07:02:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:49,538 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 553 transitions. [2021-10-13 07:02:49,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 553 transitions. [2021-10-13 07:02:49,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-13 07:02:49,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:49,541 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:49,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:49,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:49,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:49,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:49,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2083720979, now seen corresponding path program 1 times [2021-10-13 07:02:49,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:49,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844725123] [2021-10-13 07:02:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:49,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:49,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:49,767 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:49,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:02:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:50,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:50,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-13 07:02:50,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-13 07:02:50,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:50,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844725123] [2021-10-13 07:02:50,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844725123] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:50,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:50,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:02:50,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326745248] [2021-10-13 07:02:50,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:50,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:50,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:50,682 INFO L87 Difference]: Start difference. First operand 382 states and 553 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:50,827 INFO L93 Difference]: Finished difference Result 791 states and 1157 transitions. [2021-10-13 07:02:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:50,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 154 [2021-10-13 07:02:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:50,831 INFO L225 Difference]: With dead ends: 791 [2021-10-13 07:02:50,831 INFO L226 Difference]: Without dead ends: 417 [2021-10-13 07:02:50,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-10-13 07:02:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-10-13 07:02:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.4338235294117647) internal successors, (585), 408 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 585 transitions. [2021-10-13 07:02:50,848 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 585 transitions. Word has length 154 [2021-10-13 07:02:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:50,848 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 585 transitions. [2021-10-13 07:02:50,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 585 transitions. [2021-10-13 07:02:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-13 07:02:50,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:50,852 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:50,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:51,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:51,064 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:51,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1997631543, now seen corresponding path program 1 times [2021-10-13 07:02:51,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:51,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630138594] [2021-10-13 07:02:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:51,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:51,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:51,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:51,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:02:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:51,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:51,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-13 07:02:51,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-13 07:02:52,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:52,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630138594] [2021-10-13 07:02:52,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630138594] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:52,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:52,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:02:52,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212858920] [2021-10-13 07:02:52,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:52,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:52,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:52,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:52,108 INFO L87 Difference]: Start difference. First operand 409 states and 585 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:52,266 INFO L93 Difference]: Finished difference Result 841 states and 1214 transitions. [2021-10-13 07:02:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:02:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 177 [2021-10-13 07:02:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:52,269 INFO L225 Difference]: With dead ends: 841 [2021-10-13 07:02:52,269 INFO L226 Difference]: Without dead ends: 440 [2021-10-13 07:02:52,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-13 07:02:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2021-10-13 07:02:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.4164759725400458) internal successors, (619), 437 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 619 transitions. [2021-10-13 07:02:52,287 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 619 transitions. Word has length 177 [2021-10-13 07:02:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:52,287 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 619 transitions. [2021-10-13 07:02:52,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 619 transitions. [2021-10-13 07:02:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-10-13 07:02:52,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:52,291 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:52,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:52,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:52,512 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash -36033930, now seen corresponding path program 1 times [2021-10-13 07:02:52,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:52,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392108822] [2021-10-13 07:02:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:52,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:52,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:52,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:52,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:02:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:52,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:02:52,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-10-13 07:02:53,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-10-13 07:02:53,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:53,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392108822] [2021-10-13 07:02:53,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392108822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:53,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:53,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-13 07:02:53,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076463997] [2021-10-13 07:02:53,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:02:53,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:02:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:02:53,889 INFO L87 Difference]: Start difference. First operand 438 states and 619 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:54,050 INFO L93 Difference]: Finished difference Result 2952 states and 4177 transitions. [2021-10-13 07:02:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:02:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 182 [2021-10-13 07:02:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:54,067 INFO L225 Difference]: With dead ends: 2952 [2021-10-13 07:02:54,067 INFO L226 Difference]: Without dead ends: 2522 [2021-10-13 07:02:54,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:02:54,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2021-10-13 07:02:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 865. [2021-10-13 07:02:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 1.4143518518518519) internal successors, (1222), 864 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1222 transitions. [2021-10-13 07:02:54,121 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1222 transitions. Word has length 182 [2021-10-13 07:02:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:54,122 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1222 transitions. [2021-10-13 07:02:54,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:54,122 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1222 transitions. [2021-10-13 07:02:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-10-13 07:02:54,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:54,126 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:54,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:54,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:54,339 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:54,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1493164832, now seen corresponding path program 1 times [2021-10-13 07:02:54,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:54,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900599010] [2021-10-13 07:02:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:54,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:54,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:54,341 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:54,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:02:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:54,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:02:54,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 174 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-13 07:02:55,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 174 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-13 07:02:55,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:55,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900599010] [2021-10-13 07:02:55,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900599010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:02:55,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [480348807] [2021-10-13 07:02:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:55,759 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:02:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:02:55,764 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:02:55,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:02:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:56,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:56,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-10-13 07:02:57,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-10-13 07:02:57,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [480348807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:57,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:02:57,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 6 [2021-10-13 07:02:57,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976697308] [2021-10-13 07:02:57,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:02:57,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:57,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:02:57,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:02:57,718 INFO L87 Difference]: Start difference. First operand 865 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:57,865 INFO L93 Difference]: Finished difference Result 3332 states and 4734 transitions. [2021-10-13 07:02:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:02:57,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 183 [2021-10-13 07:02:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:57,881 INFO L225 Difference]: With dead ends: 3332 [2021-10-13 07:02:57,881 INFO L226 Difference]: Without dead ends: 2475 [2021-10-13 07:02:57,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:02:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2021-10-13 07:02:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2475. [2021-10-13 07:02:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2474 states have (on average 1.4163298302344383) internal successors, (3504), 2474 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3504 transitions. [2021-10-13 07:02:58,002 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3504 transitions. Word has length 183 [2021-10-13 07:02:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:58,003 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 3504 transitions. [2021-10-13 07:02:58,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:02:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3504 transitions. [2021-10-13 07:02:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-13 07:02:58,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:58,011 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:58,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:58,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:58,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:02:58,424 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:58,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:58,425 INFO L82 PathProgramCache]: Analyzing trace with hash 795443789, now seen corresponding path program 1 times [2021-10-13 07:02:58,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:58,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990013200] [2021-10-13 07:02:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:58,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:58,427 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:58,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:02:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:59,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:02:59,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-13 07:02:59,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-13 07:02:59,983 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:59,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990013200] [2021-10-13 07:02:59,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990013200] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:59,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:59,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:02:59,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472707217] [2021-10-13 07:02:59,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:02:59,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:02:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:02:59,986 INFO L87 Difference]: Start difference. First operand 2475 states and 3504 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:00,120 INFO L93 Difference]: Finished difference Result 5034 states and 7100 transitions. [2021-10-13 07:03:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:00,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 191 [2021-10-13 07:03:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:00,136 INFO L225 Difference]: With dead ends: 5034 [2021-10-13 07:03:00,136 INFO L226 Difference]: Without dead ends: 2567 [2021-10-13 07:03:00,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:00,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-10-13 07:03:00,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2567. [2021-10-13 07:03:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2567 states, 2566 states have (on average 1.4053000779423226) internal successors, (3606), 2566 states have internal predecessors, (3606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3606 transitions. [2021-10-13 07:03:00,261 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3606 transitions. Word has length 191 [2021-10-13 07:03:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:00,261 INFO L470 AbstractCegarLoop]: Abstraction has 2567 states and 3606 transitions. [2021-10-13 07:03:00,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3606 transitions. [2021-10-13 07:03:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-13 07:03:00,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:00,270 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:00,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:00,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:00,485 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1772505644, now seen corresponding path program 1 times [2021-10-13 07:03:00,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:00,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454988096] [2021-10-13 07:03:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:00,487 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:00,488 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:00,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:03:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:01,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:01,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-10-13 07:03:01,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-10-13 07:03:02,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:02,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454988096] [2021-10-13 07:03:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454988096] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:02,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:02,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:03:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237832506] [2021-10-13 07:03:02,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:02,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:02,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:02,119 INFO L87 Difference]: Start difference. First operand 2567 states and 3606 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:02,234 INFO L93 Difference]: Finished difference Result 5174 states and 7260 transitions. [2021-10-13 07:03:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 192 [2021-10-13 07:03:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:02,249 INFO L225 Difference]: With dead ends: 5174 [2021-10-13 07:03:02,249 INFO L226 Difference]: Without dead ends: 2615 [2021-10-13 07:03:02,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-10-13 07:03:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2615. [2021-10-13 07:03:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 2614 states have (on average 1.4016832440703901) internal successors, (3664), 2614 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3664 transitions. [2021-10-13 07:03:02,415 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3664 transitions. Word has length 192 [2021-10-13 07:03:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:02,416 INFO L470 AbstractCegarLoop]: Abstraction has 2615 states and 3664 transitions. [2021-10-13 07:03:02,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3664 transitions. [2021-10-13 07:03:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-13 07:03:02,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:02,423 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:02,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:02,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:02,637 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash 941852010, now seen corresponding path program 1 times [2021-10-13 07:03:02,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:02,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622918277] [2021-10-13 07:03:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:02,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:02,640 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:02,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:03:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:03,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:03,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 07:03:03,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-13 07:03:04,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:04,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622918277] [2021-10-13 07:03:04,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622918277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:04,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:04,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:03:04,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605065962] [2021-10-13 07:03:04,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:04,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:04,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:04,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:04,301 INFO L87 Difference]: Start difference. First operand 2615 states and 3664 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:04,387 INFO L93 Difference]: Finished difference Result 5235 states and 7330 transitions. [2021-10-13 07:03:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 192 [2021-10-13 07:03:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:04,402 INFO L225 Difference]: With dead ends: 5235 [2021-10-13 07:03:04,402 INFO L226 Difference]: Without dead ends: 2628 [2021-10-13 07:03:04,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2021-10-13 07:03:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2628. [2021-10-13 07:03:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2628 states, 2627 states have (on average 1.3996954701180053) internal successors, (3677), 2627 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3677 transitions. [2021-10-13 07:03:04,525 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3677 transitions. Word has length 192 [2021-10-13 07:03:04,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:04,526 INFO L470 AbstractCegarLoop]: Abstraction has 2628 states and 3677 transitions. [2021-10-13 07:03:04,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:04,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3677 transitions. [2021-10-13 07:03:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-13 07:03:04,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:04,534 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:04,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:04,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:04,748 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:04,748 INFO L82 PathProgramCache]: Analyzing trace with hash 194746143, now seen corresponding path program 1 times [2021-10-13 07:03:04,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:04,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528901476] [2021-10-13 07:03:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:04,749 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:04,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:04,750 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:04,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:03:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:05,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-13 07:03:06,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-13 07:03:06,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:06,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528901476] [2021-10-13 07:03:06,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528901476] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:06,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:06,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:03:06,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735609367] [2021-10-13 07:03:06,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:06,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:06,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:06,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:06,500 INFO L87 Difference]: Start difference. First operand 2628 states and 3677 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:06,702 INFO L93 Difference]: Finished difference Result 5421 states and 7677 transitions. [2021-10-13 07:03:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 233 [2021-10-13 07:03:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:06,718 INFO L225 Difference]: With dead ends: 5421 [2021-10-13 07:03:06,719 INFO L226 Difference]: Without dead ends: 2814 [2021-10-13 07:03:06,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-10-13 07:03:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2814. [2021-10-13 07:03:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.3839317454674724) internal successors, (3893), 2813 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3893 transitions. [2021-10-13 07:03:06,830 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3893 transitions. Word has length 233 [2021-10-13 07:03:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:06,831 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 3893 transitions. [2021-10-13 07:03:06,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3893 transitions. [2021-10-13 07:03:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-10-13 07:03:06,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:06,839 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:06,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:07,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:07,052 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash -203429094, now seen corresponding path program 2 times [2021-10-13 07:03:07,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:07,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610974] [2021-10-13 07:03:07,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:03:07,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:07,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:07,057 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:07,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:03:08,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:03:08,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:03:08,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:03:08,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 26 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-13 07:03:08,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 26 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-13 07:03:09,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:09,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610974] [2021-10-13 07:03:09,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:03:09,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2046239427] [2021-10-13 07:03:09,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:03:09,060 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:03:09,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:03:09,061 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:03:09,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-13 07:03:10,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:03:10,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:03:10,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:10,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-13 07:03:11,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-13 07:03:11,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2046239427] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:11,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:03:11,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 6 [2021-10-13 07:03:11,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297233896] [2021-10-13 07:03:11,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:03:11,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:03:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:03:11,715 INFO L87 Difference]: Start difference. First operand 2814 states and 3893 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:11,842 INFO L93 Difference]: Finished difference Result 6608 states and 9136 transitions. [2021-10-13 07:03:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:03:11,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 261 [2021-10-13 07:03:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:11,863 INFO L225 Difference]: With dead ends: 6608 [2021-10-13 07:03:11,864 INFO L226 Difference]: Without dead ends: 3815 [2021-10-13 07:03:11,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:03:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2021-10-13 07:03:12,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 3815. [2021-10-13 07:03:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3814 states have (on average 1.3754588358678552) internal successors, (5246), 3814 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 5246 transitions. [2021-10-13 07:03:12,022 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 5246 transitions. Word has length 261 [2021-10-13 07:03:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:12,022 INFO L470 AbstractCegarLoop]: Abstraction has 3815 states and 5246 transitions. [2021-10-13 07:03:12,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 5246 transitions. [2021-10-13 07:03:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-10-13 07:03:12,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:12,036 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:12,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:12,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:12,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:03:12,456 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:12,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash -12429086, now seen corresponding path program 1 times [2021-10-13 07:03:12,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:12,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219018368] [2021-10-13 07:03:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:12,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:12,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:12,459 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:12,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:03:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:13,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:13,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-10-13 07:03:14,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-10-13 07:03:14,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:14,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219018368] [2021-10-13 07:03:14,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219018368] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:14,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:14,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:03:14,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059334269] [2021-10-13 07:03:14,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:14,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:14,961 INFO L87 Difference]: Start difference. First operand 3815 states and 5246 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:15,130 INFO L93 Difference]: Finished difference Result 10352 states and 14267 transitions. [2021-10-13 07:03:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:15,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 341 [2021-10-13 07:03:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:15,165 INFO L225 Difference]: With dead ends: 10352 [2021-10-13 07:03:15,165 INFO L226 Difference]: Without dead ends: 6558 [2021-10-13 07:03:15,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2021-10-13 07:03:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6556. [2021-10-13 07:03:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6556 states, 6555 states have (on average 1.3768115942028984) internal successors, (9025), 6555 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6556 states to 6556 states and 9025 transitions. [2021-10-13 07:03:15,435 INFO L78 Accepts]: Start accepts. Automaton has 6556 states and 9025 transitions. Word has length 341 [2021-10-13 07:03:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:15,436 INFO L470 AbstractCegarLoop]: Abstraction has 6556 states and 9025 transitions. [2021-10-13 07:03:15,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:15,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6556 states and 9025 transitions. [2021-10-13 07:03:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-10-13 07:03:15,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:15,452 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:15,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:15,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:15,667 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 941511072, now seen corresponding path program 1 times [2021-10-13 07:03:15,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:15,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861865562] [2021-10-13 07:03:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:15,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:15,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:15,670 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:15,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:03:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:17,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:17,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-13 07:03:17,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-13 07:03:18,709 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:18,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861865562] [2021-10-13 07:03:18,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861865562] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:18,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:18,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:03:18,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122277789] [2021-10-13 07:03:18,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:18,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:18,712 INFO L87 Difference]: Start difference. First operand 6556 states and 9025 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:18,847 INFO L93 Difference]: Finished difference Result 10206 states and 14067 transitions. [2021-10-13 07:03:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 341 [2021-10-13 07:03:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:18,862 INFO L225 Difference]: With dead ends: 10206 [2021-10-13 07:03:18,863 INFO L226 Difference]: Without dead ends: 6584 [2021-10-13 07:03:18,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6584 states. [2021-10-13 07:03:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6584 to 6582. [2021-10-13 07:03:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6582 states, 6581 states have (on average 1.3738033733475157) internal successors, (9041), 6581 states have internal predecessors, (9041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6582 states to 6582 states and 9041 transitions. [2021-10-13 07:03:19,079 INFO L78 Accepts]: Start accepts. Automaton has 6582 states and 9041 transitions. Word has length 341 [2021-10-13 07:03:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:19,080 INFO L470 AbstractCegarLoop]: Abstraction has 6582 states and 9041 transitions. [2021-10-13 07:03:19,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6582 states and 9041 transitions. [2021-10-13 07:03:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-10-13 07:03:19,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:19,095 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:19,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:19,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:19,341 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:19,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:19,342 INFO L82 PathProgramCache]: Analyzing trace with hash 598839972, now seen corresponding path program 1 times [2021-10-13 07:03:19,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:19,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534809396] [2021-10-13 07:03:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:19,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:19,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:19,344 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:03:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:20,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:20,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-13 07:03:21,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-13 07:03:22,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:22,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534809396] [2021-10-13 07:03:22,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534809396] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:22,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:22,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:03:22,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008446251] [2021-10-13 07:03:22,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:03:22,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:22,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:03:22,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:03:22,090 INFO L87 Difference]: Start difference. First operand 6582 states and 9041 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:22,462 INFO L93 Difference]: Finished difference Result 11741 states and 16377 transitions. [2021-10-13 07:03:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:03:22,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 341 [2021-10-13 07:03:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:22,472 INFO L225 Difference]: With dead ends: 11741 [2021-10-13 07:03:22,472 INFO L226 Difference]: Without dead ends: 3715 [2021-10-13 07:03:22,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:03:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2021-10-13 07:03:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3643. [2021-10-13 07:03:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 3642 states have (on average 1.3756177924217463) internal successors, (5010), 3642 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5010 transitions. [2021-10-13 07:03:22,600 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5010 transitions. Word has length 341 [2021-10-13 07:03:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:22,600 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 5010 transitions. [2021-10-13 07:03:22,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5010 transitions. [2021-10-13 07:03:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-10-13 07:03:22,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:22,618 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:22,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:22,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:22,833 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:22,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1117694847, now seen corresponding path program 1 times [2021-10-13 07:03:22,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:22,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204500458] [2021-10-13 07:03:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:22,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:22,835 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:22,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:03:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:24,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:03:24,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1156 proven. 26 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-10-13 07:03:25,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1156 proven. 26 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-10-13 07:03:26,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:26,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204500458] [2021-10-13 07:03:26,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204500458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:03:26,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1654477436] [2021-10-13 07:03:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:26,027 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:03:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:03:26,027 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:03:26,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 07:03:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:28,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:28,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1051 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2021-10-13 07:03:29,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1051 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2021-10-13 07:03:30,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1654477436] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:30,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:03:30,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-10-13 07:03:30,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815152894] [2021-10-13 07:03:30,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:30,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:03:30,075 INFO L87 Difference]: Start difference. First operand 3643 states and 5010 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:30,218 INFO L93 Difference]: Finished difference Result 7359 states and 10103 transitions. [2021-10-13 07:03:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 445 [2021-10-13 07:03:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:30,228 INFO L225 Difference]: With dead ends: 7359 [2021-10-13 07:03:30,229 INFO L226 Difference]: Without dead ends: 3737 [2021-10-13 07:03:30,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1776 GetRequests, 1773 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:03:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-10-13 07:03:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-10-13 07:03:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3736 states have (on average 1.3688436830835118) internal successors, (5114), 3736 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5114 transitions. [2021-10-13 07:03:30,355 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5114 transitions. Word has length 445 [2021-10-13 07:03:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:30,356 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 5114 transitions. [2021-10-13 07:03:30,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5114 transitions. [2021-10-13 07:03:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-10-13 07:03:30,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:30,366 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:30,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:30,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:30,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:03:30,781 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1879476792, now seen corresponding path program 1 times [2021-10-13 07:03:30,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:30,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152825534] [2021-10-13 07:03:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:30,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:30,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:30,783 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:30,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:03:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:32,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:03:32,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-13 07:03:33,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-13 07:03:34,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:34,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152825534] [2021-10-13 07:03:34,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152825534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:03:34,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [920648566] [2021-10-13 07:03:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:34,708 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:03:34,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:03:34,714 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:03:34,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-13 07:03:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:37,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:03:37,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-13 07:03:38,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-13 07:03:39,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [920648566] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:03:39,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601277984] [2021-10-13 07:03:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:39,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:03:39,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:03:39,878 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:03:39,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 07:03:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:42,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:03:42,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-13 07:03:43,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-13 07:03:44,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601277984] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:03:44,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:03:44,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-13 07:03:44,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922356140] [2021-10-13 07:03:44,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:03:44,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:44,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:03:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:03:44,854 INFO L87 Difference]: Start difference. First operand 3737 states and 5114 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:45,141 INFO L93 Difference]: Finished difference Result 11161 states and 15236 transitions. [2021-10-13 07:03:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:03:45,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 557 [2021-10-13 07:03:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:45,156 INFO L225 Difference]: With dead ends: 11161 [2021-10-13 07:03:45,156 INFO L226 Difference]: Without dead ends: 7445 [2021-10-13 07:03:45,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3338 GetRequests, 3335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:03:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states. [2021-10-13 07:03:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 5001. [2021-10-13 07:03:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5001 states, 5000 states have (on average 1.402) internal successors, (7010), 5000 states have internal predecessors, (7010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5001 states to 5001 states and 7010 transitions. [2021-10-13 07:03:45,348 INFO L78 Accepts]: Start accepts. Automaton has 5001 states and 7010 transitions. Word has length 557 [2021-10-13 07:03:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:45,351 INFO L470 AbstractCegarLoop]: Abstraction has 5001 states and 7010 transitions. [2021-10-13 07:03:45,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5001 states and 7010 transitions. [2021-10-13 07:03:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2021-10-13 07:03:45,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:45,366 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 9, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:45,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:45,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:45,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-13 07:03:45,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:03:45,984 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:45,985 INFO L82 PathProgramCache]: Analyzing trace with hash 846463375, now seen corresponding path program 1 times [2021-10-13 07:03:45,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:45,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744546829] [2021-10-13 07:03:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:45,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:45,987 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:45,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:03:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:48,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:48,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1693 proven. 0 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2021-10-13 07:03:49,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1693 proven. 0 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2021-10-13 07:03:50,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:50,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744546829] [2021-10-13 07:03:50,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744546829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:50,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:50,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:03:50,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176765972] [2021-10-13 07:03:50,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:50,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:50,896 INFO L87 Difference]: Start difference. First operand 5001 states and 7010 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:51,053 INFO L93 Difference]: Finished difference Result 10327 states and 14585 transitions. [2021-10-13 07:03:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:51,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 588 [2021-10-13 07:03:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:51,064 INFO L225 Difference]: With dead ends: 10327 [2021-10-13 07:03:51,064 INFO L226 Difference]: Without dead ends: 5347 [2021-10-13 07:03:51,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2021-10-13 07:03:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5161. [2021-10-13 07:03:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 1.3972868217054264) internal successors, (7210), 5160 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 7210 transitions. [2021-10-13 07:03:51,246 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 7210 transitions. Word has length 588 [2021-10-13 07:03:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:51,246 INFO L470 AbstractCegarLoop]: Abstraction has 5161 states and 7210 transitions. [2021-10-13 07:03:51,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 7210 transitions. [2021-10-13 07:03:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2021-10-13 07:03:51,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:51,259 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 9, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:51,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:51,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:51,479 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:51,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2134797920, now seen corresponding path program 1 times [2021-10-13 07:03:51,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:51,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077271332] [2021-10-13 07:03:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:51,481 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:51,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:51,482 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:51,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 07:03:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:54,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:03:54,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:03:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1824 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2021-10-13 07:03:55,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:03:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1824 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2021-10-13 07:03:56,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:03:56,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077271332] [2021-10-13 07:03:56,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077271332] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:56,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:56,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:03:56,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030483614] [2021-10-13 07:03:56,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:03:56,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:03:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:03:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:56,458 INFO L87 Difference]: Start difference. First operand 5161 states and 7210 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:56,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:56,726 INFO L93 Difference]: Finished difference Result 10877 states and 15435 transitions. [2021-10-13 07:03:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:03:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 589 [2021-10-13 07:03:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:56,737 INFO L225 Difference]: With dead ends: 10877 [2021-10-13 07:03:56,737 INFO L226 Difference]: Without dead ends: 5737 [2021-10-13 07:03:56,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:03:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2021-10-13 07:03:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5705. [2021-10-13 07:03:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5704 states have (on average 1.373422159887798) internal successors, (7834), 5704 states have internal predecessors, (7834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7834 transitions. [2021-10-13 07:03:56,893 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7834 transitions. Word has length 589 [2021-10-13 07:03:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:56,894 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 7834 transitions. [2021-10-13 07:03:56,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:03:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7834 transitions. [2021-10-13 07:03:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2021-10-13 07:03:56,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:56,906 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 17, 17, 16, 16, 15, 15, 14, 14, 14, 14, 10, 9, 9, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:56,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:57,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:57,119 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:03:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:57,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1193198328, now seen corresponding path program 1 times [2021-10-13 07:03:57,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:03:57,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654880204] [2021-10-13 07:03:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:57,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:03:57,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:03:57,122 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:03:57,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 07:04:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:04:00,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:04:00,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:04:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4046 backedges. 2148 proven. 0 refuted. 0 times theorem prover too weak. 1898 trivial. 0 not checked. [2021-10-13 07:04:01,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:04:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4046 backedges. 2148 proven. 0 refuted. 0 times theorem prover too weak. 1898 trivial. 0 not checked. [2021-10-13 07:04:02,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:04:02,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654880204] [2021-10-13 07:04:02,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654880204] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:04:02,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:04:02,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:04:02,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062581656] [2021-10-13 07:04:02,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:04:02,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:04:02,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:04:02,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:04:02,436 INFO L87 Difference]: Start difference. First operand 5705 states and 7834 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:04:02,615 INFO L93 Difference]: Finished difference Result 11997 states and 16747 transitions. [2021-10-13 07:04:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:04:02,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 620 [2021-10-13 07:04:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:04:02,629 INFO L225 Difference]: With dead ends: 11997 [2021-10-13 07:04:02,629 INFO L226 Difference]: Without dead ends: 6313 [2021-10-13 07:04:02,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:04:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2021-10-13 07:04:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6281. [2021-10-13 07:04:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 6280 states have (on average 1.3519108280254777) internal successors, (8490), 6280 states have internal predecessors, (8490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 8490 transitions. [2021-10-13 07:04:02,828 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 8490 transitions. Word has length 620 [2021-10-13 07:04:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:04:02,828 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 8490 transitions. [2021-10-13 07:04:02,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 8490 transitions. [2021-10-13 07:04:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2021-10-13 07:04:02,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:04:02,842 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 17, 17, 16, 16, 15, 15, 15, 15, 11, 10, 10, 9, 9, 8, 8, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:04:02,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 07:04:03,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:04:03,057 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:04:03,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:04:03,057 INFO L82 PathProgramCache]: Analyzing trace with hash -2123037925, now seen corresponding path program 1 times [2021-10-13 07:04:03,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:04:03,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397954268] [2021-10-13 07:04:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:03,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:04:03,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:04:03,060 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:04:03,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 07:04:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:04:06,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:04:06,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:04:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 2488 proven. 0 refuted. 0 times theorem prover too weak. 2053 trivial. 0 not checked. [2021-10-13 07:04:07,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:04:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 2488 proven. 0 refuted. 0 times theorem prover too weak. 2053 trivial. 0 not checked. [2021-10-13 07:04:08,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:04:08,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397954268] [2021-10-13 07:04:08,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397954268] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:04:08,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:04:08,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:04:08,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65316001] [2021-10-13 07:04:08,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:04:08,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:04:08,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:04:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:04:08,768 INFO L87 Difference]: Start difference. First operand 6281 states and 8490 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:08,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:04:08,944 INFO L93 Difference]: Finished difference Result 11655 states and 15546 transitions. [2021-10-13 07:04:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:04:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 653 [2021-10-13 07:04:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:04:08,951 INFO L225 Difference]: With dead ends: 11655 [2021-10-13 07:04:08,952 INFO L226 Difference]: Without dead ends: 5395 [2021-10-13 07:04:08,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 1303 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:04:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5395 states. [2021-10-13 07:04:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5395 to 4675. [2021-10-13 07:04:09,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4675 states, 4674 states have (on average 1.2558836114676937) internal successors, (5870), 4674 states have internal predecessors, (5870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4675 states to 4675 states and 5870 transitions. [2021-10-13 07:04:09,078 INFO L78 Accepts]: Start accepts. Automaton has 4675 states and 5870 transitions. Word has length 653 [2021-10-13 07:04:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:04:09,078 INFO L470 AbstractCegarLoop]: Abstraction has 4675 states and 5870 transitions. [2021-10-13 07:04:09,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4675 states and 5870 transitions. [2021-10-13 07:04:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2021-10-13 07:04:09,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:04:09,090 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 19, 19, 18, 18, 17, 17, 16, 16, 16, 16, 12, 11, 11, 10, 10, 9, 9, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:04:09,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 07:04:09,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:04:09,312 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:04:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:04:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2077040329, now seen corresponding path program 1 times [2021-10-13 07:04:09,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:04:09,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047738769] [2021-10-13 07:04:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:09,313 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:04:09,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:04:09,314 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:04:09,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 07:04:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:04:12,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:04:12,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:04:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-13 07:04:14,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:04:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-13 07:04:15,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:04:15,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047738769] [2021-10-13 07:04:15,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047738769] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:04:15,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [880636570] [2021-10-13 07:04:15,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:15,318 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:04:15,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:04:15,342 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:04:15,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-10-13 07:04:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:04:20,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:04:20,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:04:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-13 07:04:22,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:04:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-13 07:04:23,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [880636570] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:04:23,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144335348] [2021-10-13 07:04:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:23,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:04:23,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:04:23,375 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:04:23,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 07:04:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:04:28,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:04:28,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:04:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-13 07:04:29,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:04:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-13 07:04:31,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144335348] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:04:31,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:04:31,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:04:31,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558641806] [2021-10-13 07:04:31,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:04:31,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:04:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:04:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:04:31,005 INFO L87 Difference]: Start difference. First operand 4675 states and 5870 transitions. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:04:31,332 INFO L93 Difference]: Finished difference Result 6013 states and 7520 transitions. [2021-10-13 07:04:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:04:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 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 692 [2021-10-13 07:04:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:04:31,333 INFO L225 Difference]: With dead ends: 6013 [2021-10-13 07:04:31,334 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:04:31,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4152 GetRequests, 4145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:04:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:04:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:04:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:04:31,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 692 [2021-10-13 07:04:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:04:31,338 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:04:31,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:04:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:04:31,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:04:31,340 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:04:31,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-10-13 07:04:31,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-13 07:04:31,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 07:04:31,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:04:31,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:04:31,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:31,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:32,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:04:35,261 INFO L857 garLoopResultBuilder]: For program point L532(lines 532 538) no Hoare annotation was computed. [2021-10-13 07:04:35,261 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 368) no Hoare annotation was computed. [2021-10-13 07:04:35,261 INFO L857 garLoopResultBuilder]: For program point L334-1(lines 334 368) no Hoare annotation was computed. [2021-10-13 07:04:35,261 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 570) no Hoare annotation was computed. [2021-10-13 07:04:35,262 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 581) no Hoare annotation was computed. [2021-10-13 07:04:35,262 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 592) no Hoare annotation was computed. [2021-10-13 07:04:35,262 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 603) no Hoare annotation was computed. [2021-10-13 07:04:35,262 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 503) no Hoare annotation was computed. [2021-10-13 07:04:35,262 INFO L857 garLoopResultBuilder]: For program point L467(lines 467 469) no Hoare annotation was computed. [2021-10-13 07:04:35,262 INFO L857 garLoopResultBuilder]: For program point L401(lines 401 403) no Hoare annotation was computed. [2021-10-13 07:04:35,263 INFO L857 garLoopResultBuilder]: For program point L335(lines 335 365) no Hoare annotation was computed. [2021-10-13 07:04:35,263 INFO L853 garLoopResultBuilder]: At program point L203(lines 199 571) the Hoare annotation is: (let ((.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse4 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1 .cse3))) [2021-10-13 07:04:35,263 INFO L853 garLoopResultBuilder]: At program point L104(lines 103 603) the Hoare annotation is: (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-13 07:04:35,263 INFO L860 garLoopResultBuilder]: At program point L633(lines 12 635) the Hoare annotation is: true [2021-10-13 07:04:35,264 INFO L853 garLoopResultBuilder]: At program point L567(lines 100 622) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse7 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse4 (not .cse0)) (.cse5 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse9 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse8 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse6 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse10 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv9 32)))) (.cse12 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse5 .cse0 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse0 .cse1) (and .cse7 .cse4 .cse1) (and .cse7 .cse6 .cse1) (and .cse5 .cse8 .cse0 .cse1) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse0 .cse1) (and .cse2 .cse3 .cse6) (and .cse9 .cse4) (and .cse5 .cse0 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse5 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and .cse5 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse9 .cse8) (and .cse10 .cse6 .cse0 .cse1) (and .cse10 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse11 .cse12 .cse0) (and .cse11 .cse12 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv10 32)))) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1)))) [2021-10-13 07:04:35,264 INFO L857 garLoopResultBuilder]: For program point L535(lines 535 537) no Hoare annotation was computed. [2021-10-13 07:04:35,264 INFO L857 garLoopResultBuilder]: For program point L535-2(lines 209 566) no Hoare annotation was computed. [2021-10-13 07:04:35,264 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 569) no Hoare annotation was computed. [2021-10-13 07:04:35,264 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 580) no Hoare annotation was computed. [2021-10-13 07:04:35,265 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 591) no Hoare annotation was computed. [2021-10-13 07:04:35,265 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 602) no Hoare annotation was computed. [2021-10-13 07:04:35,266 INFO L857 garLoopResultBuilder]: For program point L305(lines 305 312) no Hoare annotation was computed. [2021-10-13 07:04:35,266 INFO L857 garLoopResultBuilder]: For program point L305-2(lines 305 312) no Hoare annotation was computed. [2021-10-13 07:04:35,266 INFO L860 garLoopResultBuilder]: At program point L206(lines 205 569) the Hoare annotation is: true [2021-10-13 07:04:35,266 INFO L853 garLoopResultBuilder]: At program point L173(lines 169 581) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,266 INFO L853 garLoopResultBuilder]: At program point L140(lines 136 592) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32)) .cse0 .cse1 .cse3))) [2021-10-13 07:04:35,267 INFO L857 garLoopResultBuilder]: For program point L604(lines 604 620) no Hoare annotation was computed. [2021-10-13 07:04:35,267 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 515) no Hoare annotation was computed. [2021-10-13 07:04:35,267 INFO L857 garLoopResultBuilder]: For program point L340(lines 340 363) no Hoare annotation was computed. [2021-10-13 07:04:35,267 INFO L860 garLoopResultBuilder]: At program point L208(lines 207 569) the Hoare annotation is: true [2021-10-13 07:04:35,267 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 579) no Hoare annotation was computed. [2021-10-13 07:04:35,267 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 590) no Hoare annotation was computed. [2021-10-13 07:04:35,268 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 601) no Hoare annotation was computed. [2021-10-13 07:04:35,268 INFO L857 garLoopResultBuilder]: For program point L605(lines 605 619) no Hoare annotation was computed. [2021-10-13 07:04:35,268 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 277) no Hoare annotation was computed. [2021-10-13 07:04:35,268 INFO L857 garLoopResultBuilder]: For program point L275-2(lines 209 566) no Hoare annotation was computed. [2021-10-13 07:04:35,268 INFO L857 garLoopResultBuilder]: For program point L606(lines 606 611) no Hoare annotation was computed. [2021-10-13 07:04:35,268 INFO L857 garLoopResultBuilder]: For program point L606-2(lines 605 619) no Hoare annotation was computed. [2021-10-13 07:04:35,268 INFO L857 garLoopResultBuilder]: For program point L441(lines 441 443) no Hoare annotation was computed. [2021-10-13 07:04:35,269 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 311) no Hoare annotation was computed. [2021-10-13 07:04:35,269 INFO L857 garLoopResultBuilder]: For program point L508(lines 508 514) no Hoare annotation was computed. [2021-10-13 07:04:35,269 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 347) no Hoare annotation was computed. [2021-10-13 07:04:35,269 INFO L857 garLoopResultBuilder]: For program point L343-2(lines 343 347) no Hoare annotation was computed. [2021-10-13 07:04:35,269 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 254) no Hoare annotation was computed. [2021-10-13 07:04:35,269 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 578) no Hoare annotation was computed. [2021-10-13 07:04:35,270 INFO L857 garLoopResultBuilder]: For program point L145(lines 145 589) no Hoare annotation was computed. [2021-10-13 07:04:35,270 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 600) no Hoare annotation was computed. [2021-10-13 07:04:35,270 INFO L857 garLoopResultBuilder]: For program point L608(lines 608 610) no Hoare annotation was computed. [2021-10-13 07:04:35,270 INFO L857 garLoopResultBuilder]: For program point L476(lines 476 486) no Hoare annotation was computed. [2021-10-13 07:04:35,270 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 409) no Hoare annotation was computed. [2021-10-13 07:04:35,270 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 248) no Hoare annotation was computed. [2021-10-13 07:04:35,271 INFO L853 garLoopResultBuilder]: At program point L212(lines 106 602) the Hoare annotation is: (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-13 07:04:35,271 INFO L853 garLoopResultBuilder]: At program point L179(lines 175 579) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,271 INFO L853 garLoopResultBuilder]: At program point L146(lines 142 590) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,271 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 453) no Hoare annotation was computed. [2021-10-13 07:04:35,272 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 384) no Hoare annotation was computed. [2021-10-13 07:04:35,272 INFO L857 garLoopResultBuilder]: For program point L544(lines 544 548) no Hoare annotation was computed. [2021-10-13 07:04:35,272 INFO L857 garLoopResultBuilder]: For program point L511(lines 511 513) no Hoare annotation was computed. [2021-10-13 07:04:35,272 INFO L857 garLoopResultBuilder]: For program point L544-2(lines 544 548) no Hoare annotation was computed. [2021-10-13 07:04:35,272 INFO L857 garLoopResultBuilder]: For program point L511-2(lines 209 566) no Hoare annotation was computed. [2021-10-13 07:04:35,273 INFO L857 garLoopResultBuilder]: For program point L181(lines 181 577) no Hoare annotation was computed. [2021-10-13 07:04:35,273 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 588) no Hoare annotation was computed. [2021-10-13 07:04:35,273 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 599) no Hoare annotation was computed. [2021-10-13 07:04:35,275 INFO L857 garLoopResultBuilder]: For program point L479(lines 479 485) no Hoare annotation was computed. [2021-10-13 07:04:35,275 INFO L857 garLoopResultBuilder]: For program point L479-2(lines 209 566) no Hoare annotation was computed. [2021-10-13 07:04:35,275 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:04:35,275 INFO L860 garLoopResultBuilder]: At program point L645(lines 636 647) the Hoare annotation is: true [2021-10-13 07:04:35,275 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 617) no Hoare annotation was computed. [2021-10-13 07:04:35,275 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-10-13 07:04:35,275 INFO L857 garLoopResultBuilder]: For program point L217(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:04:35,276 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 576) no Hoare annotation was computed. [2021-10-13 07:04:35,276 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 587) no Hoare annotation was computed. [2021-10-13 07:04:35,276 INFO L857 garLoopResultBuilder]: For program point L217-2(lines 217 219) no Hoare annotation was computed. [2021-10-13 07:04:35,276 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 598) no Hoare annotation was computed. [2021-10-13 07:04:35,276 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 484) no Hoare annotation was computed. [2021-10-13 07:04:35,276 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:04:35,277 INFO L853 garLoopResultBuilder]: At program point L185(lines 181 577) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,277 INFO L853 garLoopResultBuilder]: At program point L152(lines 148 588) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,277 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 88) no Hoare annotation was computed. [2021-10-13 07:04:35,277 INFO L857 garLoopResultBuilder]: For program point L86-2(lines 83 89) no Hoare annotation was computed. [2021-10-13 07:04:35,278 INFO L853 garLoopResultBuilder]: At program point L483(lines 73 634) the Hoare annotation is: false [2021-10-13 07:04:35,278 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 359) no Hoare annotation was computed. [2021-10-13 07:04:35,278 INFO L853 garLoopResultBuilder]: At program point L352(lines 328 370) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,278 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 575) no Hoare annotation was computed. [2021-10-13 07:04:35,278 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 586) no Hoare annotation was computed. [2021-10-13 07:04:35,279 INFO L857 garLoopResultBuilder]: For program point L121(lines 121 597) no Hoare annotation was computed. [2021-10-13 07:04:35,279 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 421) no Hoare annotation was computed. [2021-10-13 07:04:35,279 INFO L853 garLoopResultBuilder]: At program point L386(lines 377 409) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,279 INFO L853 garLoopResultBuilder]: At program point L122(lines 118 598) the Hoare annotation is: (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0))) [2021-10-13 07:04:35,279 INFO L857 garLoopResultBuilder]: For program point L354(lines 354 356) no Hoare annotation was computed. [2021-10-13 07:04:35,279 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 290) no Hoare annotation was computed. [2021-10-13 07:04:35,280 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 224) no Hoare annotation was computed. [2021-10-13 07:04:35,280 INFO L857 garLoopResultBuilder]: For program point L288-2(lines 209 566) no Hoare annotation was computed. [2021-10-13 07:04:35,280 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 326) no Hoare annotation was computed. [2021-10-13 07:04:35,280 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:04:35,280 INFO L857 garLoopResultBuilder]: For program point L322-2(lines 209 566) no Hoare annotation was computed. [2021-10-13 07:04:35,280 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 574) no Hoare annotation was computed. [2021-10-13 07:04:35,280 INFO L857 garLoopResultBuilder]: For program point L157(lines 157 585) no Hoare annotation was computed. [2021-10-13 07:04:35,281 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 596) no Hoare annotation was computed. [2021-10-13 07:04:35,281 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-13 07:04:35,281 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 73 634) no Hoare annotation was computed. [2021-10-13 07:04:35,281 INFO L857 garLoopResultBuilder]: For program point L554(lines 554 560) no Hoare annotation was computed. [2021-10-13 07:04:35,281 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 524) no Hoare annotation was computed. [2021-10-13 07:04:35,281 INFO L857 garLoopResultBuilder]: For program point L554-1(lines 554 560) no Hoare annotation was computed. [2021-10-13 07:04:35,281 INFO L857 garLoopResultBuilder]: For program point L389(lines 389 407) no Hoare annotation was computed. [2021-10-13 07:04:35,282 INFO L853 garLoopResultBuilder]: At program point L191(lines 187 575) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (not .cse0)))) [2021-10-13 07:04:35,282 INFO L853 garLoopResultBuilder]: At program point L158(lines 154 586) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,282 INFO L853 garLoopResultBuilder]: At program point L125(lines 124 596) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv9 32))) .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)) .cse2))) [2021-10-13 07:04:35,282 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 94) no Hoare annotation was computed. [2021-10-13 07:04:35,282 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 396) no Hoare annotation was computed. [2021-10-13 07:04:35,282 INFO L857 garLoopResultBuilder]: For program point L490(lines 490 494) no Hoare annotation was computed. [2021-10-13 07:04:35,283 INFO L857 garLoopResultBuilder]: For program point L490-2(lines 490 494) no Hoare annotation was computed. [2021-10-13 07:04:35,283 INFO L857 garLoopResultBuilder]: For program point L193(lines 193 573) no Hoare annotation was computed. [2021-10-13 07:04:35,283 INFO L857 garLoopResultBuilder]: For program point L160(lines 160 584) no Hoare annotation was computed. [2021-10-13 07:04:35,283 INFO L857 garLoopResultBuilder]: For program point L127(lines 127 595) no Hoare annotation was computed. [2021-10-13 07:04:35,283 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:04:35,284 INFO L860 garLoopResultBuilder]: At program point L623(lines 99 624) the Hoare annotation is: true [2021-10-13 07:04:35,284 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 559) no Hoare annotation was computed. [2021-10-13 07:04:35,284 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 460) no Hoare annotation was computed. [2021-10-13 07:04:35,285 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 262) no Hoare annotation was computed. [2021-10-13 07:04:35,285 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 238) no Hoare annotation was computed. [2021-10-13 07:04:35,285 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 209 566) no Hoare annotation was computed. [2021-10-13 07:04:35,285 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 298) no Hoare annotation was computed. [2021-10-13 07:04:35,285 INFO L857 garLoopResultBuilder]: For program point L294-2(lines 294 298) no Hoare annotation was computed. [2021-10-13 07:04:35,285 INFO L857 garLoopResultBuilder]: For program point L427-1(lines 427 435) no Hoare annotation was computed. [2021-10-13 07:04:35,285 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 232) no Hoare annotation was computed. [2021-10-13 07:04:35,286 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 572) no Hoare annotation was computed. [2021-10-13 07:04:35,286 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 583) no Hoare annotation was computed. [2021-10-13 07:04:35,286 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 594) no Hoare annotation was computed. [2021-10-13 07:04:35,286 INFO L853 garLoopResultBuilder]: At program point L197(lines 193 573) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (.cse3 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse2 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 .cse2) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse3 .cse2) (and .cse0 .cse1 .cse3 .cse2))) [2021-10-13 07:04:35,287 INFO L853 garLoopResultBuilder]: At program point L164(lines 160 584) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,287 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:04:35,287 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 632) no Hoare annotation was computed. [2021-10-13 07:04:35,287 INFO L857 garLoopResultBuilder]: For program point L628(lines 628 630) no Hoare annotation was computed. [2021-10-13 07:04:35,288 INFO L857 garLoopResultBuilder]: For program point L628-2(lines 628 630) no Hoare annotation was computed. [2021-10-13 07:04:35,288 INFO L857 garLoopResultBuilder]: For program point L529(lines 529 539) no Hoare annotation was computed. [2021-10-13 07:04:35,288 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 433) no Hoare annotation was computed. [2021-10-13 07:04:35,288 INFO L857 garLoopResultBuilder]: For program point L331(lines 331 369) no Hoare annotation was computed. [2021-10-13 07:04:35,288 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 571) no Hoare annotation was computed. [2021-10-13 07:04:35,288 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 582) no Hoare annotation was computed. [2021-10-13 07:04:35,289 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 593) no Hoare annotation was computed. [2021-10-13 07:04:35,289 INFO L853 garLoopResultBuilder]: At program point L100-2(lines 100 622) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (let ((.cse7 (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= (_ bv8672 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse3 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse4 (not .cse0)) (.cse5 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse9 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse8 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse6 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32)))) (.cse10 (= (_ bv8496 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse11 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv9 32)))) (.cse12 (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0))) (or (and (= (_ bv8512 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse5 .cse0 (= (_ bv8592 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and (= (_ bv8466 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse6 .cse0 .cse1) (and .cse7 .cse4 .cse1) (and .cse7 .cse6 .cse1) (and .cse5 .cse8 .cse0 .cse1) (and (= (_ bv8528 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__new_cipher__algorithms~0 ULTIMATE.start_ssl3_accept_~__cil_tmp56~0) .cse0 .cse1) (and .cse2 .cse3 .cse6) (and .cse9 .cse4) (and .cse5 .cse0 (= (_ bv8608 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse1) (and .cse5 (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and .cse5 (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse9 .cse8) (and .cse10 .cse6 .cse0 .cse1) (and .cse10 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv1 32))) (and .cse11 .cse12 .cse0) (and (= (_ bv8464 32) ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32))) (and .cse11 .cse12 (not (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv10 32)))) (and (= (_ bv8560 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1) (and (= (_ bv8544 32) ULTIMATE.start_ssl3_accept_~s__state~0) .cse0 .cse1)))) [2021-10-13 07:04:35,289 INFO L853 garLoopResultBuilder]: At program point L398(lines 389 407) the Hoare annotation is: (let ((.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3))) [2021-10-13 07:04:35,289 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 236) no Hoare annotation was computed. [2021-10-13 07:04:35,289 INFO L853 garLoopResultBuilder]: At program point L167(lines 166 582) the Hoare annotation is: (let ((.cse2 (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse0 (= (_ bv8448 32) ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32)))) (or (and (= (_ bv8576 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse0 .cse1 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and (= (_ bv3 32) ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse2 .cse0) (and .cse2 .cse0 (not .cse1)))) [2021-10-13 07:04:35,290 INFO L853 garLoopResultBuilder]: At program point L134(lines 127 595) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 (_ bv0 32))) (.cse0 (not (= (_ bv8641 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= (_ bv8656 32) ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= (_ bv8640 32) ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (= (_ bv4 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse0 .cse1 (not .cse2) .cse3) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 (_ bv8640 32))) .cse1 .cse2 (= (_ bv2 32) ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse3) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 (_ bv0 32)) .cse0 .cse1 .cse3))) [2021-10-13 07:04:35,290 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:04:35,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:04:35,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:04:35 BoogieIcfgContainer [2021-10-13 07:04:35,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:04:35,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:04:35,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:04:35,326 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:04:35,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:43" (3/4) ... [2021-10-13 07:04:35,330 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:04:35,347 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:04:35,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:04:35,349 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:04:35,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:04:35,452 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:04:35,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:04:35,458 INFO L168 Benchmark]: Toolchain (without parser) took 113893.49 ms. Allocated memory was 56.6 MB in the beginning and 813.7 MB in the end (delta: 757.1 MB). Free memory was 34.2 MB in the beginning and 500.5 MB in the end (delta: -466.2 MB). Peak memory consumption was 291.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:35,458 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:04:35,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.88 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.1 MB in the beginning and 51.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:35,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.95 ms. Allocated memory is still 71.3 MB. Free memory was 51.0 MB in the beginning and 48.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:35,460 INFO L168 Benchmark]: Boogie Preprocessor took 44.17 ms. Allocated memory is still 71.3 MB. Free memory was 48.3 MB in the beginning and 46.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:35,460 INFO L168 Benchmark]: RCFGBuilder took 925.42 ms. Allocated memory is still 71.3 MB. Free memory was 46.2 MB in the beginning and 36.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:35,461 INFO L168 Benchmark]: TraceAbstraction took 112218.12 ms. Allocated memory was 71.3 MB in the beginning and 813.7 MB in the end (delta: 742.4 MB). Free memory was 36.0 MB in the beginning and 511.0 MB in the end (delta: -475.0 MB). Peak memory consumption was 604.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:35,462 INFO L168 Benchmark]: Witness Printer took 126.34 ms. Allocated memory is still 813.7 MB. Free memory was 511.0 MB in the beginning and 500.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:35,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 504.88 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.1 MB in the beginning and 51.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.95 ms. Allocated memory is still 71.3 MB. Free memory was 51.0 MB in the beginning and 48.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.17 ms. Allocated memory is still 71.3 MB. Free memory was 48.3 MB in the beginning and 46.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 925.42 ms. Allocated memory is still 71.3 MB. Free memory was 46.2 MB in the beginning and 36.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 112218.12 ms. Allocated memory was 71.3 MB in the beginning and 813.7 MB in the end (delta: 742.4 MB). Free memory was 36.0 MB in the beginning and 511.0 MB in the end (delta: -475.0 MB). Peak memory consumption was 604.0 MB. Max. memory is 16.1 GB. * Witness Printer took 126.34 ms. Allocated memory is still 813.7 MB. Free memory was 511.0 MB in the beginning and 500.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 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: 632]: 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, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 112098.3ms, OverallIterations: 25, TraceHistogramMax: 21, EmptinessCheckTime: 224.5ms, AutomataDifference: 5192.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3305.1ms, InitialAbstractionConstructionTime: 18.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5883 SDtfs, 3250 SDslu, 5782 SDs, 0 SdLazy, 2764 SolverSat, 619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2243.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21548 GetRequests, 21498 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 184.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6582occurred in iteration=17, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2534.0ms AutomataMinimizationTime, 25 MinimizatonAttempts, 5208 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 286 NumberOfFragments, 1269 HoareAnnotationTreeSize, 28 FomulaSimplifications, 23076 FormulaSimplificationTreeSizeReduction, 988.9ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 2614 FormulaSimplificationTreeSizeReductionInter, 2301.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 564.9ms SsaConstructionTime, 2883.0ms SatisfiabilityAnalysisTime, 42151.3ms InterpolantComputationTime, 10799 NumberOfCodeBlocks, 10799 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 21534 ConstructedInterpolants, 0 QuantifiedInterpolants, 29192 SizeOfPredicates, 14 NumberOfNonLiveVariables, 12558 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 64 InterpolantComputations, 46 PerfectInterpolantSequences, 104274/104742 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 328]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8641bv32 == s__state) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: (((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((!(8641bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((!(8641bv32 == s__state) && !(s__hit == 0bv32)) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 377]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8641bv32 == s__state) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: (((8640bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag) || ((4bv32 == blastFlag && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((((((((((((((((((((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8640bv32))) || (4bv32 == blastFlag && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 4bv32 == blastFlag) && 8448bv32 == s__state)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || ((!(blastFlag == 9bv32) && 3bv32 == s__state) && s__hit == 0bv32)) || ((!(blastFlag == 9bv32) && 3bv32 == s__state) && !(blastFlag == 10bv32))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 389]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8641bv32 == s__state) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8641bv32 == s__state) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: (((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8641bv32 == s__state) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: (((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: (((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(8640bv32 == s__state)) || ((((!(blastFlag == 9bv32) && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && !(8640bv32 == s__state)) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: (((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((((!(8641bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((blastFlag == 0bv32 && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(8640bv32 == s__state)) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8641bv32 == s__state) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 166]: Loop Invariant Derived loop invariant: ((((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag) || ((3bv32 == s__s3__tmp__next_state___0 && 4bv32 == blastFlag) && 8448bv32 == s__state)) || ((4bv32 == blastFlag && 8448bv32 == s__state) && !(s__hit == 0bv32)) - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: (((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((((!(8641bv32 == s__state) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state))) || (((blastFlag == 1bv32 && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(8640bv32 == s__state)) - InvariantResult [Line: 169]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: (((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((3bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state))) || ((((3bv32 == blastFlag && !(8641bv32 == s__state)) && !(s__s3__tmp__next_state___0 == 8640bv32)) && !(8656bv32 == s__state)) && !(8640bv32 == s__state)) - InvariantResult [Line: 181]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || (((((8576bv32 == s__s3__tmp__next_state___0 && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: ((((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state)) || ((((!(8641bv32 == s__state) && !(8656bv32 == s__state)) && s__hit == 0bv32) && 2bv32 == blastFlag) && !(8640bv32 == s__state)) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((((((((((((((((((((8512bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8592bv32 == s__state) && 2bv32 == blastFlag)) || (((8466bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__hit == 0bv32)) && 2bv32 == blastFlag)) || ((8656bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8448bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8528bv32 == s__state && s__s3__tmp__new_cipher__algorithms == __cil_tmp56) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8672bv32 == s__state && 3bv32 == blastFlag) && !(s__s3__tmp__next_state___0 == 8640bv32))) || (4bv32 == blastFlag && !(s__hit == 0bv32))) || (((8576bv32 == s__s3__tmp__next_state___0 && s__hit == 0bv32) && 8608bv32 == s__state) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8576bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (((8576bv32 == s__s3__tmp__next_state___0 && 8640bv32 == s__state) && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((3bv32 == s__s3__tmp__next_state___0 && 4bv32 == blastFlag) && 8448bv32 == s__state)) || (((8496bv32 == s__state && !(s__s3__tmp__next_state___0 == 8640bv32)) && s__hit == 0bv32) && 2bv32 == blastFlag)) || (8496bv32 == s__state && blastFlag == 1bv32)) || ((!(blastFlag == 9bv32) && 3bv32 == s__state) && s__hit == 0bv32)) || (8464bv32 == s__state && blastFlag == 0bv32)) || ((!(blastFlag == 9bv32) && 3bv32 == s__state) && !(blastFlag == 10bv32))) || ((8560bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag)) || ((8544bv32 == s__state && s__hit == 0bv32) && 2bv32 == blastFlag) - InvariantResult [Line: 636]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:04:35,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c137aa-8a42-4154-a49d-0dc472da9fe3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...