./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52dcb49447dfc4bbe1dc203630f4dab70fdef397 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52dcb49447dfc4bbe1dc203630f4dab70fdef397 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:05:12,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:12,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:12,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:12,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:12,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:12,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:12,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:12,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:12,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:12,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:12,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:12,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:12,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:12,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:12,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:12,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:12,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:12,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:12,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:12,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:12,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:12,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:12,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:12,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:12,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:12,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:12,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:12,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:12,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:12,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:12,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:12,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:12,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:12,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:12,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:12,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:12,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:12,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:12,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:12,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:12,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:05:12,635 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:12,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:12,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:12,648 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:12,649 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:12,649 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:12,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:05:12,649 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:12,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:12,650 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:05:12,651 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:05:12,651 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:12,652 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:05:12,652 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:05:12,653 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:05:12,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:12,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:12,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:05:12,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:12,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:12,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:12,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:12,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:12,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:12,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:12,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:12,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:12,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:12,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:12,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:12,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:12,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:12,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:12,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:12,662 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:05:12,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:05:12,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:12,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:12,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:12,663 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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52dcb49447dfc4bbe1dc203630f4dab70fdef397 [2021-10-16 03:05:13,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:13,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:13,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:13,061 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:13,062 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:13,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-16 03:05:13,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/3511a767a/ac4378fc455e4c2597dffeacac18c91c/FLAG4dc07f619 [2021-10-16 03:05:13,662 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:13,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-16 03:05:13,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/3511a767a/ac4378fc455e4c2597dffeacac18c91c/FLAG4dc07f619 [2021-10-16 03:05:14,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/3511a767a/ac4378fc455e4c2597dffeacac18c91c [2021-10-16 03:05:14,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:14,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:14,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:14,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:14,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:14,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13782271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14, skipping insertion in model container [2021-10-16 03:05:14,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:14,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:14,336 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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44943,44956] [2021-10-16 03:05:14,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:14,358 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:14,418 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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44943,44956] [2021-10-16 03:05:14,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:14,440 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:14,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14 WrapperNode [2021-10-16 03:05:14,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:14,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:14,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:14,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:14,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:14,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:14,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:14,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:14,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:14,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:14,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:14,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:14,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:14,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:14,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:14,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:05:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:14,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:14,793 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 03:05:15,380 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 03:05:15,380 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 03:05:15,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:15,802 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:05:15,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:15 BoogieIcfgContainer [2021-10-16 03:05:15,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:15,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:15,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:15,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:15,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:14" (1/3) ... [2021-10-16 03:05:15,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747aa9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:15, skipping insertion in model container [2021-10-16 03:05:15,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (2/3) ... [2021-10-16 03:05:15,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747aa9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:15, skipping insertion in model container [2021-10-16 03:05:15,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:15" (3/3) ... [2021-10-16 03:05:15,817 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_8.cil.c [2021-10-16 03:05:15,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:15,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:15,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:15,909 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:05:15,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:15,934 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) [2021-10-16 03:05:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 03:05:15,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:15,951 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] [2021-10-16 03:05:15,951 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1591809503, now seen corresponding path program 1 times [2021-10-16 03:05:15,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:15,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175104311] [2021-10-16 03:05:15,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:15,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:16,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:16,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175104311] [2021-10-16 03:05:16,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175104311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:16,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:16,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:05:16,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539070045] [2021-10-16 03:05:16,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:16,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:16,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:16,268 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) [2021-10-16 03:05:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:16,496 INFO L93 Difference]: Finished difference Result 235 states and 408 transitions. [2021-10-16 03:05:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:16,498 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 [2021-10-16 03:05:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:16,516 INFO L225 Difference]: With dead ends: 235 [2021-10-16 03:05:16,516 INFO L226 Difference]: Without dead ends: 123 [2021-10-16 03:05:16,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:16,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-16 03:05:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-10-16 03:05:16,584 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) [2021-10-16 03:05:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2021-10-16 03:05:16,591 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 37 [2021-10-16 03:05:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:16,593 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2021-10-16 03:05:16,593 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) [2021-10-16 03:05:16,594 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2021-10-16 03:05:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-16 03:05:16,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:16,598 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] [2021-10-16 03:05:16,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:05:16,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash -143311441, now seen corresponding path program 1 times [2021-10-16 03:05:16,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:16,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194109696] [2021-10-16 03:05:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:16,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:16,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:16,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194109696] [2021-10-16 03:05:16,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194109696] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:16,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:16,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:16,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494871776] [2021-10-16 03:05:16,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:16,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:16,772 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) [2021-10-16 03:05:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:16,902 INFO L93 Difference]: Finished difference Result 261 states and 390 transitions. [2021-10-16 03:05:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:16,903 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 [2021-10-16 03:05:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:16,904 INFO L225 Difference]: With dead ends: 261 [2021-10-16 03:05:16,905 INFO L226 Difference]: Without dead ends: 142 [2021-10-16 03:05:16,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-16 03:05:16,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2021-10-16 03:05:16,916 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) [2021-10-16 03:05:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 200 transitions. [2021-10-16 03:05:16,917 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 200 transitions. Word has length 51 [2021-10-16 03:05:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:16,918 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 200 transitions. [2021-10-16 03:05:16,918 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) [2021-10-16 03:05:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 200 transitions. [2021-10-16 03:05:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-16 03:05:16,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:16,922 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] [2021-10-16 03:05:16,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:05:16,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:16,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1806303542, now seen corresponding path program 1 times [2021-10-16 03:05:16,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:16,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900553984] [2021-10-16 03:05:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:16,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 03:05:17,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:17,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900553984] [2021-10-16 03:05:17,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900553984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:17,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:17,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:05:17,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485611816] [2021-10-16 03:05:17,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:17,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:17,072 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) [2021-10-16 03:05:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:17,364 INFO L93 Difference]: Finished difference Result 352 states and 528 transitions. [2021-10-16 03:05:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:17,365 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 [2021-10-16 03:05:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:17,370 INFO L225 Difference]: With dead ends: 352 [2021-10-16 03:05:17,370 INFO L226 Difference]: Without dead ends: 214 [2021-10-16 03:05:17,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-16 03:05:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2021-10-16 03:05:17,398 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) [2021-10-16 03:05:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 271 transitions. [2021-10-16 03:05:17,399 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 271 transitions. Word has length 68 [2021-10-16 03:05:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:17,400 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 271 transitions. [2021-10-16 03:05:17,400 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) [2021-10-16 03:05:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 271 transitions. [2021-10-16 03:05:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-16 03:05:17,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:17,405 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] [2021-10-16 03:05:17,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:05:17,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:17,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1035573222, now seen corresponding path program 1 times [2021-10-16 03:05:17,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:17,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363283805] [2021-10-16 03:05:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:17,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-16 03:05:17,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:17,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363283805] [2021-10-16 03:05:17,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363283805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:17,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:17,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:17,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797851589] [2021-10-16 03:05:17,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:17,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:17,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:17,473 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) [2021-10-16 03:05:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:17,586 INFO L93 Difference]: Finished difference Result 409 states and 564 transitions. [2021-10-16 03:05:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:17,586 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 [2021-10-16 03:05:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:17,588 INFO L225 Difference]: With dead ends: 409 [2021-10-16 03:05:17,589 INFO L226 Difference]: Without dead ends: 213 [2021-10-16 03:05:17,590 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 [2021-10-16 03:05:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-16 03:05:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2021-10-16 03:05:17,601 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) [2021-10-16 03:05:17,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 287 transitions. [2021-10-16 03:05:17,602 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 287 transitions. Word has length 77 [2021-10-16 03:05:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:17,603 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 287 transitions. [2021-10-16 03:05:17,603 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) [2021-10-16 03:05:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 287 transitions. [2021-10-16 03:05:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-16 03:05:17,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:17,606 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] [2021-10-16 03:05:17,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:05:17,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:17,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1359968987, now seen corresponding path program 1 times [2021-10-16 03:05:17,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:17,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440231832] [2021-10-16 03:05:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:17,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-16 03:05:17,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:17,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440231832] [2021-10-16 03:05:17,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440231832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:17,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:17,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:17,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987370345] [2021-10-16 03:05:17,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:17,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:17,692 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) [2021-10-16 03:05:17,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:17,844 INFO L93 Difference]: Finished difference Result 488 states and 678 transitions. [2021-10-16 03:05:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:17,844 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 [2021-10-16 03:05:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:17,848 INFO L225 Difference]: With dead ends: 488 [2021-10-16 03:05:17,848 INFO L226 Difference]: Without dead ends: 276 [2021-10-16 03:05:17,849 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 [2021-10-16 03:05:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-16 03:05:17,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2021-10-16 03:05:17,866 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) [2021-10-16 03:05:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 376 transitions. [2021-10-16 03:05:17,868 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 376 transitions. Word has length 88 [2021-10-16 03:05:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:17,869 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 376 transitions. [2021-10-16 03:05:17,869 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) [2021-10-16 03:05:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 376 transitions. [2021-10-16 03:05:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-16 03:05:17,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:17,874 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] [2021-10-16 03:05:17,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:05:17,875 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:17,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:17,875 INFO L82 PathProgramCache]: Analyzing trace with hash -619796311, now seen corresponding path program 1 times [2021-10-16 03:05:17,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:17,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480094640] [2021-10-16 03:05:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:17,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 03:05:17,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:17,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480094640] [2021-10-16 03:05:17,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480094640] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:17,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:17,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:17,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980034629] [2021-10-16 03:05:17,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:17,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:17,985 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) [2021-10-16 03:05:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:18,115 INFO L93 Difference]: Finished difference Result 575 states and 805 transitions. [2021-10-16 03:05:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:18,117 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 [2021-10-16 03:05:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:18,121 INFO L225 Difference]: With dead ends: 575 [2021-10-16 03:05:18,121 INFO L226 Difference]: Without dead ends: 305 [2021-10-16 03:05:18,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-10-16 03:05:18,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 295. [2021-10-16 03:05:18,140 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) [2021-10-16 03:05:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 402 transitions. [2021-10-16 03:05:18,142 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 402 transitions. Word has length 88 [2021-10-16 03:05:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:18,143 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 402 transitions. [2021-10-16 03:05:18,143 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) [2021-10-16 03:05:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 402 transitions. [2021-10-16 03:05:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-16 03:05:18,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:18,145 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] [2021-10-16 03:05:18,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 03:05:18,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash -359965498, now seen corresponding path program 1 times [2021-10-16 03:05:18,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:18,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704659585] [2021-10-16 03:05:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:18,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-16 03:05:18,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:18,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704659585] [2021-10-16 03:05:18,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704659585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:18,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:18,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:18,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601096984] [2021-10-16 03:05:18,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:18,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:18,234 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) [2021-10-16 03:05:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:18,377 INFO L93 Difference]: Finished difference Result 621 states and 858 transitions. [2021-10-16 03:05:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:18,378 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 [2021-10-16 03:05:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:18,381 INFO L225 Difference]: With dead ends: 621 [2021-10-16 03:05:18,381 INFO L226 Difference]: Without dead ends: 328 [2021-10-16 03:05:18,382 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 [2021-10-16 03:05:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-16 03:05:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2021-10-16 03:05:18,394 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) [2021-10-16 03:05:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 430 transitions. [2021-10-16 03:05:18,396 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 430 transitions. Word has length 112 [2021-10-16 03:05:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:18,396 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 430 transitions. [2021-10-16 03:05:18,396 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) [2021-10-16 03:05:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 430 transitions. [2021-10-16 03:05:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-16 03:05:18,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:18,404 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] [2021-10-16 03:05:18,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 03:05:18,404 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash 459101144, now seen corresponding path program 1 times [2021-10-16 03:05:18,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:18,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352339545] [2021-10-16 03:05:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:18,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-16 03:05:18,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:18,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352339545] [2021-10-16 03:05:18,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352339545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:18,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:18,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:18,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226899181] [2021-10-16 03:05:18,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:18,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:18,494 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) [2021-10-16 03:05:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:18,683 INFO L93 Difference]: Finished difference Result 645 states and 868 transitions. [2021-10-16 03:05:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:18,684 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 [2021-10-16 03:05:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:18,691 INFO L225 Difference]: With dead ends: 645 [2021-10-16 03:05:18,691 INFO L226 Difference]: Without dead ends: 326 [2021-10-16 03:05:18,692 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 [2021-10-16 03:05:18,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-16 03:05:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2021-10-16 03:05:18,703 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) [2021-10-16 03:05:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 432 transitions. [2021-10-16 03:05:18,705 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 432 transitions. Word has length 126 [2021-10-16 03:05:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:18,706 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 432 transitions. [2021-10-16 03:05:18,706 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) [2021-10-16 03:05:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 432 transitions. [2021-10-16 03:05:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-16 03:05:18,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:18,708 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] [2021-10-16 03:05:18,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 03:05:18,708 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:18,709 INFO L82 PathProgramCache]: Analyzing trace with hash 507039663, now seen corresponding path program 1 times [2021-10-16 03:05:18,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:18,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154510017] [2021-10-16 03:05:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:18,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:05:18,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:18,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154510017] [2021-10-16 03:05:18,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154510017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:18,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:18,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:18,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519377895] [2021-10-16 03:05:18,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:18,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:18,783 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) [2021-10-16 03:05:18,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:18,948 INFO L93 Difference]: Finished difference Result 673 states and 911 transitions. [2021-10-16 03:05:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:18,949 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 [2021-10-16 03:05:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:18,951 INFO L225 Difference]: With dead ends: 673 [2021-10-16 03:05:18,951 INFO L226 Difference]: Without dead ends: 352 [2021-10-16 03:05:18,956 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 [2021-10-16 03:05:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-16 03:05:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2021-10-16 03:05:18,966 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) [2021-10-16 03:05:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 462 transitions. [2021-10-16 03:05:18,968 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 462 transitions. Word has length 134 [2021-10-16 03:05:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:18,969 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 462 transitions. [2021-10-16 03:05:18,969 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) [2021-10-16 03:05:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 462 transitions. [2021-10-16 03:05:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-16 03:05:18,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:18,971 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] [2021-10-16 03:05:18,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 03:05:18,971 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:18,972 INFO L82 PathProgramCache]: Analyzing trace with hash 993191656, now seen corresponding path program 1 times [2021-10-16 03:05:18,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:18,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31167055] [2021-10-16 03:05:18,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:18,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:05:19,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:19,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31167055] [2021-10-16 03:05:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31167055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:19,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:19,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:05:19,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621276165] [2021-10-16 03:05:19,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:19,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:19,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:19,037 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) [2021-10-16 03:05:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:19,183 INFO L93 Difference]: Finished difference Result 727 states and 973 transitions. [2021-10-16 03:05:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:19,183 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 [2021-10-16 03:05:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:19,186 INFO L225 Difference]: With dead ends: 727 [2021-10-16 03:05:19,186 INFO L226 Difference]: Without dead ends: 379 [2021-10-16 03:05:19,187 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 [2021-10-16 03:05:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-16 03:05:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-10-16 03:05:19,198 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) [2021-10-16 03:05:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 494 transitions. [2021-10-16 03:05:19,200 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 494 transitions. Word has length 139 [2021-10-16 03:05:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:19,201 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 494 transitions. [2021-10-16 03:05:19,201 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) [2021-10-16 03:05:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 494 transitions. [2021-10-16 03:05:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-16 03:05:19,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:19,203 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] [2021-10-16 03:05:19,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 03:05:19,204 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:19,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1832713772, now seen corresponding path program 1 times [2021-10-16 03:05:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:19,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605671962] [2021-10-16 03:05:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:19,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:05:19,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:19,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605671962] [2021-10-16 03:05:19,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605671962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:05:19,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336021613] [2021-10-16 03:05:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:19,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:19,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:19,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:05:19,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:05:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:19,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:05:19,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:05:19,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-16 03:05:20,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336021613] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:20,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899001948] [2021-10-16 03:05:20,406 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-10-16 03:05:20,407 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:05:20,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:05:20,419 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:05:20,420 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:05:21,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,462 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:05:21,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 03:05:21,465 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:05:21,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:05:21,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 402 [2021-10-16 03:05:21,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,603 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 [2021-10-16 03:05:21,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:21,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:21,610 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:05:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,652 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 [2021-10-16 03:05:21,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:21,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:21,662 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 03:05:21,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:21,698 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 [2021-10-16 03:05:21,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:21,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:21,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:05:21,711 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 03:05:21,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:05:21,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:22,032 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.4 percent of original size [2021-10-16 03:05:22,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1128 [2021-10-16 03:05:22,069 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-16 03:05:22,070 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1137, output treesize:1128 [2021-10-16 03:05:22,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:22,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:22,291 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) [2021-10-16 03:05:22,296 INFO L168 Benchmark]: Toolchain (without parser) took 8278.85 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 59.5 MB in the beginning and 83.7 MB in the end (delta: -24.2 MB). Peak memory consumption was 105.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:22,296 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:22,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.50 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 66.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:22,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.58 ms. Allocated memory is still 94.4 MB. Free memory was 66.0 MB in the beginning and 63.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:22,298 INFO L168 Benchmark]: Boogie Preprocessor took 40.40 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 60.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:22,300 INFO L168 Benchmark]: RCFGBuilder took 1251.85 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 60.9 MB in the beginning and 70.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:22,300 INFO L168 Benchmark]: TraceAbstraction took 6487.69 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 70.3 MB in the beginning and 83.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 87.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:22,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 420.50 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 66.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.58 ms. Allocated memory is still 94.4 MB. Free memory was 66.0 MB in the beginning and 63.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.40 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 60.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1251.85 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 60.9 MB in the beginning and 70.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6487.69 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 70.3 MB in the beginning and 83.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 87.3 MB. 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. [2021-10-16 03:05:22,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:05:25,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:25,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:25,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:25,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:25,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:25,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:25,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:25,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:25,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:25,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:25,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:25,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:25,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:25,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:25,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:25,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:25,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:25,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:25,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:25,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:25,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:25,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:25,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:25,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:25,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:25,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:25,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:25,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:25,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:25,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:25,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:25,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:25,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:25,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:25,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:25,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:25,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:25,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:25,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:25,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:25,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:05:25,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:25,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:25,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:25,187 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:25,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:25,187 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:25,188 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:25,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:25,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:25,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:25,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:25,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:25,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:25,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:25,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:25,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:25,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:25,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:05:25,194 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:05:25,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:25,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:25,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:25,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:25,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:25,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:05:25,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:25,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:25,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:25,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:25,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:25,197 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:05:25,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:25,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:25,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:25,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:25,199 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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52dcb49447dfc4bbe1dc203630f4dab70fdef397 [2021-10-16 03:05:25,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:25,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:25,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:25,768 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:25,769 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:25,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-16 03:05:25,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/90d6cd9c1/e6abb23b05cf4e15aaecba03e8a66d75/FLAG290f8773d [2021-10-16 03:05:26,431 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:26,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c [2021-10-16 03:05:26,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/90d6cd9c1/e6abb23b05cf4e15aaecba03e8a66d75/FLAG290f8773d [2021-10-16 03:05:26,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/data/90d6cd9c1/e6abb23b05cf4e15aaecba03e8a66d75 [2021-10-16 03:05:26,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:26,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:26,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:26,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:26,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:26,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:26" (1/1) ... [2021-10-16 03:05:26,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5443fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:26, skipping insertion in model container [2021-10-16 03:05:26,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:26" (1/1) ... [2021-10-16 03:05:26,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:26,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:27,064 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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44943,44956] [2021-10-16 03:05:27,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:27,089 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:27,226 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_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/sv-benchmarks/c/openssl-simplified/s3_srvr_8.cil.c[44943,44956] [2021-10-16 03:05:27,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:27,258 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:27,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27 WrapperNode [2021-10-16 03:05:27,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:27,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:27,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:27,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:27,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:27,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:27,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:27,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:27,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:27,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:27,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:27,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:27,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (1/1) ... [2021-10-16 03:05:27,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:27,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:27,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:05:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:27,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:27,680 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 03:05:28,325 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-16 03:05:28,326 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-16 03:05:28,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:28,343 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:05:28,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:28 BoogieIcfgContainer [2021-10-16 03:05:28,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:28,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:28,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:28,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:28,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:26" (1/3) ... [2021-10-16 03:05:28,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6907f4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:28, skipping insertion in model container [2021-10-16 03:05:28,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:27" (2/3) ... [2021-10-16 03:05:28,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6907f4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:28, skipping insertion in model container [2021-10-16 03:05:28,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:28" (3/3) ... [2021-10-16 03:05:28,364 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_8.cil.c [2021-10-16 03:05:28,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:28,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:28,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:28,466 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:05:28,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:28,517 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) [2021-10-16 03:05:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-16 03:05:28,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:28,545 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] [2021-10-16 03:05:28,546 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:28,553 INFO L82 PathProgramCache]: Analyzing trace with hash -737748433, now seen corresponding path program 1 times [2021-10-16 03:05:28,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:28,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259246350] [2021-10-16 03:05:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:28,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:28,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:28,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:28,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:05:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:28,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:05:28,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:29,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:29,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:29,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259246350] [2021-10-16 03:05:29,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259246350] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:29,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:29,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:29,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665954750] [2021-10-16 03:05:29,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:29,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:29,229 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) [2021-10-16 03:05:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:29,510 INFO L93 Difference]: Finished difference Result 314 states and 538 transitions. [2021-10-16 03:05:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:29,512 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 [2021-10-16 03:05:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:29,535 INFO L225 Difference]: With dead ends: 314 [2021-10-16 03:05:29,535 INFO L226 Difference]: Without dead ends: 155 [2021-10-16 03:05:29,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-16 03:05:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2021-10-16 03:05:29,588 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) [2021-10-16 03:05:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2021-10-16 03:05:29,592 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 42 [2021-10-16 03:05:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:29,592 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2021-10-16 03:05:29,593 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) [2021-10-16 03:05:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2021-10-16 03:05:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-16 03:05:29,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:29,610 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] [2021-10-16 03:05:29,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 03:05:29,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:29,811 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1349662321, now seen corresponding path program 1 times [2021-10-16 03:05:29,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:29,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129421742] [2021-10-16 03:05:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:29,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:29,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:29,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:05:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:29,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:29,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:30,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:30,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:30,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129421742] [2021-10-16 03:05:30,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129421742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:30,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:30,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:30,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901188574] [2021-10-16 03:05:30,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:30,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:30,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:30,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:30,353 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) [2021-10-16 03:05:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:30,526 INFO L93 Difference]: Finished difference Result 321 states and 494 transitions. [2021-10-16 03:05:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:30,527 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 [2021-10-16 03:05:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:30,530 INFO L225 Difference]: With dead ends: 321 [2021-10-16 03:05:30,531 INFO L226 Difference]: Without dead ends: 177 [2021-10-16 03:05:30,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-16 03:05:30,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2021-10-16 03:05:30,548 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) [2021-10-16 03:05:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2021-10-16 03:05:30,549 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 58 [2021-10-16 03:05:30,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:30,550 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 257 transitions. [2021-10-16 03:05:30,551 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) [2021-10-16 03:05:30,551 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 257 transitions. [2021-10-16 03:05:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-16 03:05:30,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:30,555 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] [2021-10-16 03:05:30,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:30,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:30,768 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:30,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1638621821, now seen corresponding path program 1 times [2021-10-16 03:05:30,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:30,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20263908] [2021-10-16 03:05:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:30,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:30,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:30,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:05:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:30,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:30,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:05:31,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:05:31,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:31,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20263908] [2021-10-16 03:05:31,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20263908] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:31,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:31,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:05:31,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788413403] [2021-10-16 03:05:31,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:31,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:31,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:31,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:31,508 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) [2021-10-16 03:05:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:31,878 INFO L93 Difference]: Finished difference Result 432 states and 672 transitions. [2021-10-16 03:05:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:31,879 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 [2021-10-16 03:05:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:31,882 INFO L225 Difference]: With dead ends: 432 [2021-10-16 03:05:31,882 INFO L226 Difference]: Without dead ends: 267 [2021-10-16 03:05:31,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-16 03:05:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 253. [2021-10-16 03:05:31,904 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) [2021-10-16 03:05:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 375 transitions. [2021-10-16 03:05:31,906 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 375 transitions. Word has length 79 [2021-10-16 03:05:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:31,907 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 375 transitions. [2021-10-16 03:05:31,907 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) [2021-10-16 03:05:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 375 transitions. [2021-10-16 03:05:31,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-16 03:05:31,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:31,912 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] [2021-10-16 03:05:31,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 03:05:32,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:32,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2025321925, now seen corresponding path program 1 times [2021-10-16 03:05:32,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:32,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856782339] [2021-10-16 03:05:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:32,127 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:32,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:32,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:32,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:05:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:32,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:32,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:05:32,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 03:05:32,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:32,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856782339] [2021-10-16 03:05:32,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856782339] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:32,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:32,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:32,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858682635] [2021-10-16 03:05:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:32,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:32,784 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) [2021-10-16 03:05:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:32,955 INFO L93 Difference]: Finished difference Result 525 states and 785 transitions. [2021-10-16 03:05:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:32,956 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 [2021-10-16 03:05:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:32,959 INFO L225 Difference]: With dead ends: 525 [2021-10-16 03:05:32,959 INFO L226 Difference]: Without dead ends: 280 [2021-10-16 03:05:32,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-16 03:05:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 276. [2021-10-16 03:05:32,990 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) [2021-10-16 03:05:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 403 transitions. [2021-10-16 03:05:32,993 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 403 transitions. Word has length 80 [2021-10-16 03:05:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:32,996 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 403 transitions. [2021-10-16 03:05:32,996 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) [2021-10-16 03:05:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 403 transitions. [2021-10-16 03:05:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 03:05:33,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:33,008 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] [2021-10-16 03:05:33,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:33,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:33,226 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2008818915, now seen corresponding path program 1 times [2021-10-16 03:05:33,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:33,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720082371] [2021-10-16 03:05:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:33,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:33,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:33,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:05:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:33,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:33,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:05:33,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:05:33,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:33,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720082371] [2021-10-16 03:05:33,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720082371] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:33,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:33,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:33,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371570335] [2021-10-16 03:05:33,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:33,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:33,968 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) [2021-10-16 03:05:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:34,141 INFO L93 Difference]: Finished difference Result 582 states and 861 transitions. [2021-10-16 03:05:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:34,145 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 [2021-10-16 03:05:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:34,148 INFO L225 Difference]: With dead ends: 582 [2021-10-16 03:05:34,148 INFO L226 Difference]: Without dead ends: 314 [2021-10-16 03:05:34,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-16 03:05:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 301. [2021-10-16 03:05:34,161 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) [2021-10-16 03:05:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 433 transitions. [2021-10-16 03:05:34,163 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 433 transitions. Word has length 101 [2021-10-16 03:05:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:34,164 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 433 transitions. [2021-10-16 03:05:34,164 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) [2021-10-16 03:05:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 433 transitions. [2021-10-16 03:05:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-16 03:05:34,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:34,167 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] [2021-10-16 03:05:34,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:34,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:34,379 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash -264921093, now seen corresponding path program 1 times [2021-10-16 03:05:34,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:34,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158505173] [2021-10-16 03:05:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:34,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:34,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:34,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:34,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:05:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:34,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:34,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:05:34,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-16 03:05:35,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:35,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158505173] [2021-10-16 03:05:35,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158505173] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:35,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:35,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:05:35,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035941688] [2021-10-16 03:05:35,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:35,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:35,265 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) [2021-10-16 03:05:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:35,603 INFO L93 Difference]: Finished difference Result 688 states and 1026 transitions. [2021-10-16 03:05:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:35,604 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 [2021-10-16 03:05:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:35,608 INFO L225 Difference]: With dead ends: 688 [2021-10-16 03:05:35,608 INFO L226 Difference]: Without dead ends: 395 [2021-10-16 03:05:35,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-10-16 03:05:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 382. [2021-10-16 03:05:35,624 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) [2021-10-16 03:05:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 553 transitions. [2021-10-16 03:05:35,626 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 553 transitions. Word has length 120 [2021-10-16 03:05:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:35,627 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 553 transitions. [2021-10-16 03:05:35,627 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) [2021-10-16 03:05:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 553 transitions. [2021-10-16 03:05:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-16 03:05:35,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:35,630 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] [2021-10-16 03:05:35,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:35,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:35,843 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2083720979, now seen corresponding path program 1 times [2021-10-16 03:05:35,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:35,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528789236] [2021-10-16 03:05:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:35,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:35,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:35,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:35,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:05:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:36,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:36,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-16 03:05:36,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-16 03:05:36,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:36,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528789236] [2021-10-16 03:05:36,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528789236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:36,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:36,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:36,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263033863] [2021-10-16 03:05:36,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:36,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:36,894 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) [2021-10-16 03:05:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:37,081 INFO L93 Difference]: Finished difference Result 791 states and 1157 transitions. [2021-10-16 03:05:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:37,082 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 [2021-10-16 03:05:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:37,087 INFO L225 Difference]: With dead ends: 791 [2021-10-16 03:05:37,087 INFO L226 Difference]: Without dead ends: 417 [2021-10-16 03:05:37,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-10-16 03:05:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-10-16 03:05:37,109 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) [2021-10-16 03:05:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 585 transitions. [2021-10-16 03:05:37,111 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 585 transitions. Word has length 154 [2021-10-16 03:05:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:37,112 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 585 transitions. [2021-10-16 03:05:37,112 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) [2021-10-16 03:05:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 585 transitions. [2021-10-16 03:05:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-16 03:05:37,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:37,117 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] [2021-10-16 03:05:37,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:37,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:37,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:37,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:37,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1997631543, now seen corresponding path program 1 times [2021-10-16 03:05:37,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:37,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139005787] [2021-10-16 03:05:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:37,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:37,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:37,322 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:37,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:05:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:37,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:37,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-16 03:05:38,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-16 03:05:38,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:38,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139005787] [2021-10-16 03:05:38,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139005787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:38,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:38,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:38,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933010593] [2021-10-16 03:05:38,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:38,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:38,633 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) [2021-10-16 03:05:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:38,822 INFO L93 Difference]: Finished difference Result 841 states and 1214 transitions. [2021-10-16 03:05:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:38,823 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 [2021-10-16 03:05:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:38,826 INFO L225 Difference]: With dead ends: 841 [2021-10-16 03:05:38,827 INFO L226 Difference]: Without dead ends: 440 [2021-10-16 03:05:38,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-16 03:05:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2021-10-16 03:05:38,843 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) [2021-10-16 03:05:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 619 transitions. [2021-10-16 03:05:38,845 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 619 transitions. Word has length 177 [2021-10-16 03:05:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:38,846 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 619 transitions. [2021-10-16 03:05:38,846 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) [2021-10-16 03:05:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 619 transitions. [2021-10-16 03:05:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-10-16 03:05:38,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:38,850 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] [2021-10-16 03:05:38,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:39,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:39,071 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:39,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:39,072 INFO L82 PathProgramCache]: Analyzing trace with hash -36033930, now seen corresponding path program 1 times [2021-10-16 03:05:39,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:39,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817883949] [2021-10-16 03:05:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:39,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:39,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:39,073 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:39,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:05:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:39,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:05:39,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-10-16 03:05:40,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-10-16 03:05:40,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:40,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817883949] [2021-10-16 03:05:40,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817883949] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:40,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:40,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 03:05:40,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684734569] [2021-10-16 03:05:40,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:05:40,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:05:40,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:05:40,639 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) [2021-10-16 03:05:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:40,855 INFO L93 Difference]: Finished difference Result 2952 states and 4177 transitions. [2021-10-16 03:05:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:05:40,856 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 [2021-10-16 03:05:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:40,874 INFO L225 Difference]: With dead ends: 2952 [2021-10-16 03:05:40,875 INFO L226 Difference]: Without dead ends: 2522 [2021-10-16 03:05:40,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 58.3ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:05:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2021-10-16 03:05:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 865. [2021-10-16 03:05:40,932 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) [2021-10-16 03:05:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1222 transitions. [2021-10-16 03:05:40,937 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1222 transitions. Word has length 182 [2021-10-16 03:05:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:40,938 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1222 transitions. [2021-10-16 03:05:40,938 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) [2021-10-16 03:05:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1222 transitions. [2021-10-16 03:05:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-10-16 03:05:40,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:40,943 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] [2021-10-16 03:05:40,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:41,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:41,161 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:41,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:41,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1493164832, now seen corresponding path program 1 times [2021-10-16 03:05:41,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:41,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767481291] [2021-10-16 03:05:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:41,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:41,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:41,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:41,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 03:05:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:41,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:05:41,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 174 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-16 03:05:42,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 174 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-16 03:05:42,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:42,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767481291] [2021-10-16 03:05:42,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767481291] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:42,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [61178733] [2021-10-16 03:05:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:42,705 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:42,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:05:42,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:05:42,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 03:05:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:43,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:43,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-10-16 03:05:44,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-10-16 03:05:44,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [61178733] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:44,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:05:44,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 6 [2021-10-16 03:05:44,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442823323] [2021-10-16 03:05:44,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:44,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:05:44,687 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) [2021-10-16 03:05:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:44,840 INFO L93 Difference]: Finished difference Result 3332 states and 4734 transitions. [2021-10-16 03:05:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:44,841 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 [2021-10-16 03:05:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:44,856 INFO L225 Difference]: With dead ends: 3332 [2021-10-16 03:05:44,856 INFO L226 Difference]: Without dead ends: 2475 [2021-10-16 03:05:44,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:05:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2021-10-16 03:05:44,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2475. [2021-10-16 03:05:44,964 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) [2021-10-16 03:05:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3504 transitions. [2021-10-16 03:05:44,976 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3504 transitions. Word has length 183 [2021-10-16 03:05:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:44,976 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 3504 transitions. [2021-10-16 03:05:44,977 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) [2021-10-16 03:05:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3504 transitions. [2021-10-16 03:05:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-16 03:05:44,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:44,985 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] [2021-10-16 03:05:44,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:45,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:45,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:45,402 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:45,403 INFO L82 PathProgramCache]: Analyzing trace with hash 795443789, now seen corresponding path program 1 times [2021-10-16 03:05:45,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:45,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120635933] [2021-10-16 03:05:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:45,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:45,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:45,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:45,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 03:05:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:46,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:46,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-16 03:05:46,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-16 03:05:46,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:46,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120635933] [2021-10-16 03:05:46,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120635933] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:46,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:46,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:46,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079331025] [2021-10-16 03:05:46,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:46,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:46,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:46,957 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) [2021-10-16 03:05:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:47,084 INFO L93 Difference]: Finished difference Result 5034 states and 7100 transitions. [2021-10-16 03:05:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:47,084 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 [2021-10-16 03:05:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:47,100 INFO L225 Difference]: With dead ends: 5034 [2021-10-16 03:05:47,100 INFO L226 Difference]: Without dead ends: 2567 [2021-10-16 03:05:47,106 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 [2021-10-16 03:05:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-10-16 03:05:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2567. [2021-10-16 03:05:47,222 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) [2021-10-16 03:05:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3606 transitions. [2021-10-16 03:05:47,235 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3606 transitions. Word has length 191 [2021-10-16 03:05:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:47,235 INFO L470 AbstractCegarLoop]: Abstraction has 2567 states and 3606 transitions. [2021-10-16 03:05:47,236 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) [2021-10-16 03:05:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3606 transitions. [2021-10-16 03:05:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-16 03:05:47,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:47,244 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] [2021-10-16 03:05:47,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:47,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:47,466 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1772505644, now seen corresponding path program 1 times [2021-10-16 03:05:47,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:47,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227547627] [2021-10-16 03:05:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:47,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:47,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:47,469 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:47,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:05:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:48,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:48,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-10-16 03:05:48,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-10-16 03:05:49,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:49,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227547627] [2021-10-16 03:05:49,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227547627] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:49,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:49,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:49,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803584326] [2021-10-16 03:05:49,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:49,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:49,152 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) [2021-10-16 03:05:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:49,252 INFO L93 Difference]: Finished difference Result 5174 states and 7260 transitions. [2021-10-16 03:05:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:49,252 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 [2021-10-16 03:05:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:49,267 INFO L225 Difference]: With dead ends: 5174 [2021-10-16 03:05:49,268 INFO L226 Difference]: Without dead ends: 2615 [2021-10-16 03:05:49,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-10-16 03:05:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2615. [2021-10-16 03:05:49,381 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) [2021-10-16 03:05:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3664 transitions. [2021-10-16 03:05:49,392 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3664 transitions. Word has length 192 [2021-10-16 03:05:49,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:49,392 INFO L470 AbstractCegarLoop]: Abstraction has 2615 states and 3664 transitions. [2021-10-16 03:05:49,392 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) [2021-10-16 03:05:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3664 transitions. [2021-10-16 03:05:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-16 03:05:49,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:49,400 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] [2021-10-16 03:05:49,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:49,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:49,614 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:49,615 INFO L82 PathProgramCache]: Analyzing trace with hash 941852010, now seen corresponding path program 1 times [2021-10-16 03:05:49,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:49,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482569486] [2021-10-16 03:05:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:49,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:49,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:49,617 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:49,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 03:05:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:50,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:50,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-16 03:05:50,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-16 03:05:51,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:51,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482569486] [2021-10-16 03:05:51,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482569486] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:51,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:51,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:51,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733367017] [2021-10-16 03:05:51,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:51,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:51,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:51,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:51,418 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) [2021-10-16 03:05:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:51,515 INFO L93 Difference]: Finished difference Result 5235 states and 7330 transitions. [2021-10-16 03:05:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:51,516 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 [2021-10-16 03:05:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:51,532 INFO L225 Difference]: With dead ends: 5235 [2021-10-16 03:05:51,532 INFO L226 Difference]: Without dead ends: 2628 [2021-10-16 03:05:51,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2021-10-16 03:05:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2628. [2021-10-16 03:05:51,628 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) [2021-10-16 03:05:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3677 transitions. [2021-10-16 03:05:51,637 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3677 transitions. Word has length 192 [2021-10-16 03:05:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:51,637 INFO L470 AbstractCegarLoop]: Abstraction has 2628 states and 3677 transitions. [2021-10-16 03:05:51,638 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) [2021-10-16 03:05:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3677 transitions. [2021-10-16 03:05:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-16 03:05:51,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:51,648 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] [2021-10-16 03:05:51,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:51,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:51,867 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:51,867 INFO L82 PathProgramCache]: Analyzing trace with hash 194746143, now seen corresponding path program 1 times [2021-10-16 03:05:51,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:51,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672082589] [2021-10-16 03:05:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:51,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:51,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:51,870 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:51,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 03:05:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:52,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:52,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-16 03:05:53,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-10-16 03:05:53,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:53,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672082589] [2021-10-16 03:05:53,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672082589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:53,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:53,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:05:53,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327222948] [2021-10-16 03:05:53,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:53,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:53,761 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) [2021-10-16 03:05:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:53,978 INFO L93 Difference]: Finished difference Result 5421 states and 7677 transitions. [2021-10-16 03:05:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:53,979 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 [2021-10-16 03:05:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:54,013 INFO L225 Difference]: With dead ends: 5421 [2021-10-16 03:05:54,013 INFO L226 Difference]: Without dead ends: 2814 [2021-10-16 03:05:54,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-10-16 03:05:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2814. [2021-10-16 03:05:54,136 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) [2021-10-16 03:05:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3893 transitions. [2021-10-16 03:05:54,147 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3893 transitions. Word has length 233 [2021-10-16 03:05:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:54,148 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 3893 transitions. [2021-10-16 03:05:54,148 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) [2021-10-16 03:05:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3893 transitions. [2021-10-16 03:05:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-10-16 03:05:54,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:54,158 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] [2021-10-16 03:05:54,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:54,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:54,379 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash -203429094, now seen corresponding path program 2 times [2021-10-16 03:05:54,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:54,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697912218] [2021-10-16 03:05:54,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:05:54,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:54,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:54,383 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:54,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 03:05:55,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:05:55,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:05:55,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:05:55,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 26 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-16 03:05:56,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 26 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-10-16 03:05:56,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:56,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697912218] [2021-10-16 03:05:56,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697912218] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:56,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [191767714] [2021-10-16 03:05:56,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:05:56,607 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:56,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:05:56,612 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:05:56,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 03:05:58,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:05:58,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:05:58,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:58,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-16 03:05:58,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-16 03:05:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [191767714] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:59,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:05:59,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 6 [2021-10-16 03:05:59,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996348259] [2021-10-16 03:05:59,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:59,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:05:59,280 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) [2021-10-16 03:05:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:59,471 INFO L93 Difference]: Finished difference Result 6608 states and 9136 transitions. [2021-10-16 03:05:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:59,472 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 [2021-10-16 03:05:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:59,498 INFO L225 Difference]: With dead ends: 6608 [2021-10-16 03:05:59,498 INFO L226 Difference]: Without dead ends: 3815 [2021-10-16 03:05:59,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:05:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2021-10-16 03:05:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 3815. [2021-10-16 03:05:59,653 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) [2021-10-16 03:05:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 5246 transitions. [2021-10-16 03:05:59,665 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 5246 transitions. Word has length 261 [2021-10-16 03:05:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:59,665 INFO L470 AbstractCegarLoop]: Abstraction has 3815 states and 5246 transitions. [2021-10-16 03:05:59,666 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) [2021-10-16 03:05:59,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 5246 transitions. [2021-10-16 03:05:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-10-16 03:05:59,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:59,682 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] [2021-10-16 03:05:59,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:59,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:00,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:00,103 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash -12429086, now seen corresponding path program 1 times [2021-10-16 03:06:00,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:00,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895564944] [2021-10-16 03:06:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:00,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:00,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:00,105 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:00,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 03:06:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:01,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:01,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-10-16 03:06:02,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-10-16 03:06:02,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:02,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895564944] [2021-10-16 03:06:02,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895564944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:02,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:02,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:06:02,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921110426] [2021-10-16 03:06:02,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:06:02,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:06:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:02,734 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) [2021-10-16 03:06:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:02,892 INFO L93 Difference]: Finished difference Result 10352 states and 14267 transitions. [2021-10-16 03:06:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:06:02,893 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 [2021-10-16 03:06:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:02,951 INFO L225 Difference]: With dead ends: 10352 [2021-10-16 03:06:02,952 INFO L226 Difference]: Without dead ends: 6558 [2021-10-16 03:06:02,958 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 [2021-10-16 03:06:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2021-10-16 03:06:03,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6556. [2021-10-16 03:06:03,215 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) [2021-10-16 03:06:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6556 states to 6556 states and 9025 transitions. [2021-10-16 03:06:03,239 INFO L78 Accepts]: Start accepts. Automaton has 6556 states and 9025 transitions. Word has length 341 [2021-10-16 03:06:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:03,240 INFO L470 AbstractCegarLoop]: Abstraction has 6556 states and 9025 transitions. [2021-10-16 03:06:03,241 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) [2021-10-16 03:06:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 6556 states and 9025 transitions. [2021-10-16 03:06:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-10-16 03:06:03,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:03,289 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] [2021-10-16 03:06:03,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:03,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:03,505 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:03,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 941511072, now seen corresponding path program 1 times [2021-10-16 03:06:03,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:03,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473116529] [2021-10-16 03:06:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:03,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:03,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:03,507 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:03,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 03:06:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:04,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:04,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-16 03:06:05,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-16 03:06:06,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:06,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473116529] [2021-10-16 03:06:06,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473116529] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:06,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:06,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:06:06,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538318995] [2021-10-16 03:06:06,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:06:06,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:06:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:06,552 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) [2021-10-16 03:06:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:06,701 INFO L93 Difference]: Finished difference Result 10206 states and 14067 transitions. [2021-10-16 03:06:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:06:06,701 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 [2021-10-16 03:06:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:06,717 INFO L225 Difference]: With dead ends: 10206 [2021-10-16 03:06:06,717 INFO L226 Difference]: Without dead ends: 6584 [2021-10-16 03:06:06,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:06,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6584 states. [2021-10-16 03:06:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6584 to 6582. [2021-10-16 03:06:06,921 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) [2021-10-16 03:06:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6582 states to 6582 states and 9041 transitions. [2021-10-16 03:06:06,935 INFO L78 Accepts]: Start accepts. Automaton has 6582 states and 9041 transitions. Word has length 341 [2021-10-16 03:06:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:06,936 INFO L470 AbstractCegarLoop]: Abstraction has 6582 states and 9041 transitions. [2021-10-16 03:06:06,936 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) [2021-10-16 03:06:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6582 states and 9041 transitions. [2021-10-16 03:06:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-10-16 03:06:06,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:06,975 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] [2021-10-16 03:06:06,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:07,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:07,186 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:07,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:07,187 INFO L82 PathProgramCache]: Analyzing trace with hash 598839972, now seen corresponding path program 1 times [2021-10-16 03:06:07,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:07,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243279917] [2021-10-16 03:06:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:07,188 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:07,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:07,204 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:07,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 03:06:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:08,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:08,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-16 03:06:09,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-16 03:06:10,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:10,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243279917] [2021-10-16 03:06:10,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243279917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:10,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:10,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:06:10,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466128559] [2021-10-16 03:06:10,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:06:10,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:06:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:06:10,015 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) [2021-10-16 03:06:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:10,371 INFO L93 Difference]: Finished difference Result 11741 states and 16377 transitions. [2021-10-16 03:06:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:06:10,372 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 [2021-10-16 03:06:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:10,381 INFO L225 Difference]: With dead ends: 11741 [2021-10-16 03:06:10,381 INFO L226 Difference]: Without dead ends: 3715 [2021-10-16 03:06:10,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:06:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2021-10-16 03:06:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3643. [2021-10-16 03:06:10,520 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) [2021-10-16 03:06:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5010 transitions. [2021-10-16 03:06:10,527 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5010 transitions. Word has length 341 [2021-10-16 03:06:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:10,528 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 5010 transitions. [2021-10-16 03:06:10,528 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) [2021-10-16 03:06:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5010 transitions. [2021-10-16 03:06:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-10-16 03:06:10,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:10,539 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] [2021-10-16 03:06:10,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:10,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:10,755 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1117694847, now seen corresponding path program 1 times [2021-10-16 03:06:10,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:10,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059471433] [2021-10-16 03:06:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:10,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:10,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:10,758 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:10,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 03:06:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:12,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:06:12,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1156 proven. 26 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-10-16 03:06:13,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1156 proven. 26 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-10-16 03:06:14,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:14,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059471433] [2021-10-16 03:06:14,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059471433] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:14,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1485579323] [2021-10-16 03:06:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:14,028 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:14,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:06:14,028 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:06:14,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-16 03:06:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:16,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:16,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1051 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2021-10-16 03:06:17,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1051 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2021-10-16 03:06:18,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1485579323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:18,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 03:06:18,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-10-16 03:06:18,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793846585] [2021-10-16 03:06:18,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:06:18,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:06:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:06:18,178 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) [2021-10-16 03:06:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:18,292 INFO L93 Difference]: Finished difference Result 7359 states and 10103 transitions. [2021-10-16 03:06:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:06:18,293 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 [2021-10-16 03:06:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:18,305 INFO L225 Difference]: With dead ends: 7359 [2021-10-16 03:06:18,305 INFO L226 Difference]: Without dead ends: 3737 [2021-10-16 03:06:18,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1776 GetRequests, 1773 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:06:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-10-16 03:06:18,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-10-16 03:06:18,416 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) [2021-10-16 03:06:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5114 transitions. [2021-10-16 03:06:18,424 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5114 transitions. Word has length 445 [2021-10-16 03:06:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:18,424 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 5114 transitions. [2021-10-16 03:06:18,425 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) [2021-10-16 03:06:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5114 transitions. [2021-10-16 03:06:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-10-16 03:06:18,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:18,442 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] [2021-10-16 03:06:18,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:18,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:18,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:18,850 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:18,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:18,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1879476792, now seen corresponding path program 1 times [2021-10-16 03:06:18,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:18,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417735491] [2021-10-16 03:06:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:18,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:18,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:18,852 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:18,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 03:06:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:20,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:06:20,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-16 03:06:21,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-16 03:06:23,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:23,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417735491] [2021-10-16 03:06:23,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417735491] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:23,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [237605142] [2021-10-16 03:06:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:23,100 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:23,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:06:23,101 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:06:23,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 03:06:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:26,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:06:26,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-16 03:06:27,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-16 03:06:28,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [237605142] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:28,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622821236] [2021-10-16 03:06:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:28,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:06:28,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:06:28,742 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:06:28,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 03:06:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:31,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:06:31,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-16 03:06:32,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 1577 proven. 26 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2021-10-16 03:06:33,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622821236] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:06:33,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:06:33,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 4 [2021-10-16 03:06:33,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580004007] [2021-10-16 03:06:33,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:06:33,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:06:33,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:06:33,858 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) [2021-10-16 03:06:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:34,178 INFO L93 Difference]: Finished difference Result 11161 states and 15236 transitions. [2021-10-16 03:06:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:06:34,178 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 [2021-10-16 03:06:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:34,197 INFO L225 Difference]: With dead ends: 11161 [2021-10-16 03:06:34,198 INFO L226 Difference]: Without dead ends: 7445 [2021-10-16 03:06:34,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3338 GetRequests, 3335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:06:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7445 states. [2021-10-16 03:06:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7445 to 5001. [2021-10-16 03:06:34,430 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) [2021-10-16 03:06:34,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5001 states to 5001 states and 7010 transitions. [2021-10-16 03:06:34,442 INFO L78 Accepts]: Start accepts. Automaton has 5001 states and 7010 transitions. Word has length 557 [2021-10-16 03:06:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:34,442 INFO L470 AbstractCegarLoop]: Abstraction has 5001 states and 7010 transitions. [2021-10-16 03:06:34,443 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) [2021-10-16 03:06:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5001 states and 7010 transitions. [2021-10-16 03:06:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2021-10-16 03:06:34,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:34,465 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] [2021-10-16 03:06:34,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-10-16 03:06:34,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:34,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:35,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:35,075 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash 846463375, now seen corresponding path program 1 times [2021-10-16 03:06:35,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:35,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467788356] [2021-10-16 03:06:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:35,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:35,078 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:35,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 03:06:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:37,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:37,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1693 proven. 0 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2021-10-16 03:06:38,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1693 proven. 0 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2021-10-16 03:06:39,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:39,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467788356] [2021-10-16 03:06:39,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467788356] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:39,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:39,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:06:39,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353902129] [2021-10-16 03:06:39,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:06:39,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:06:39,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:39,959 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) [2021-10-16 03:06:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:40,141 INFO L93 Difference]: Finished difference Result 10327 states and 14585 transitions. [2021-10-16 03:06:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:06:40,142 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 [2021-10-16 03:06:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:40,153 INFO L225 Difference]: With dead ends: 10327 [2021-10-16 03:06:40,153 INFO L226 Difference]: Without dead ends: 5347 [2021-10-16 03:06:40,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2021-10-16 03:06:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5161. [2021-10-16 03:06:40,310 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) [2021-10-16 03:06:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 7210 transitions. [2021-10-16 03:06:40,319 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 7210 transitions. Word has length 588 [2021-10-16 03:06:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:40,319 INFO L470 AbstractCegarLoop]: Abstraction has 5161 states and 7210 transitions. [2021-10-16 03:06:40,320 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) [2021-10-16 03:06:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 7210 transitions. [2021-10-16 03:06:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2021-10-16 03:06:40,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:40,333 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] [2021-10-16 03:06:40,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:40,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:40,548 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:40,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2134797920, now seen corresponding path program 1 times [2021-10-16 03:06:40,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:40,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147555752] [2021-10-16 03:06:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:40,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:40,551 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-16 03:06:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:43,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:43,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1824 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2021-10-16 03:06:44,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1824 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2021-10-16 03:06:45,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:45,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147555752] [2021-10-16 03:06:45,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147555752] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:45,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:45,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:06:45,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397035761] [2021-10-16 03:06:45,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:06:45,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:06:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:45,624 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) [2021-10-16 03:06:45,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:45,923 INFO L93 Difference]: Finished difference Result 10877 states and 15435 transitions. [2021-10-16 03:06:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:06:45,924 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 [2021-10-16 03:06:45,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:45,938 INFO L225 Difference]: With dead ends: 10877 [2021-10-16 03:06:45,938 INFO L226 Difference]: Without dead ends: 5737 [2021-10-16 03:06:45,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:45,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2021-10-16 03:06:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5705. [2021-10-16 03:06:46,112 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) [2021-10-16 03:06:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7834 transitions. [2021-10-16 03:06:46,123 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7834 transitions. Word has length 589 [2021-10-16 03:06:46,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:46,124 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 7834 transitions. [2021-10-16 03:06:46,124 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) [2021-10-16 03:06:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7834 transitions. [2021-10-16 03:06:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2021-10-16 03:06:46,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:46,139 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] [2021-10-16 03:06:46,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:46,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:46,352 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:46,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1193198328, now seen corresponding path program 1 times [2021-10-16 03:06:46,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:46,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364530541] [2021-10-16 03:06:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:46,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:46,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:46,355 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:46,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 03:06:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:49,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:49,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4046 backedges. 2148 proven. 0 refuted. 0 times theorem prover too weak. 1898 trivial. 0 not checked. [2021-10-16 03:06:50,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4046 backedges. 2148 proven. 0 refuted. 0 times theorem prover too weak. 1898 trivial. 0 not checked. [2021-10-16 03:06:51,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:51,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364530541] [2021-10-16 03:06:51,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364530541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:51,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:51,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:06:51,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491579785] [2021-10-16 03:06:51,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:06:51,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:51,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:06:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:51,741 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) [2021-10-16 03:06:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:51,976 INFO L93 Difference]: Finished difference Result 11997 states and 16747 transitions. [2021-10-16 03:06:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:06:51,976 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 [2021-10-16 03:06:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:51,992 INFO L225 Difference]: With dead ends: 11997 [2021-10-16 03:06:51,993 INFO L226 Difference]: Without dead ends: 6313 [2021-10-16 03:06:52,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2021-10-16 03:06:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6281. [2021-10-16 03:06:52,164 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) [2021-10-16 03:06:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 8490 transitions. [2021-10-16 03:06:52,176 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 8490 transitions. Word has length 620 [2021-10-16 03:06:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:52,176 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 8490 transitions. [2021-10-16 03:06:52,177 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) [2021-10-16 03:06:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 8490 transitions. [2021-10-16 03:06:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2021-10-16 03:06:52,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:52,192 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] [2021-10-16 03:06:52,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:52,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:52,406 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:52,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2123037925, now seen corresponding path program 1 times [2021-10-16 03:06:52,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:52,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512900174] [2021-10-16 03:06:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:52,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:52,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:52,410 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:52,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-16 03:06:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:06:55,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:06:55,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:06:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 2488 proven. 0 refuted. 0 times theorem prover too weak. 2053 trivial. 0 not checked. [2021-10-16 03:06:57,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:06:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 2488 proven. 0 refuted. 0 times theorem prover too weak. 2053 trivial. 0 not checked. [2021-10-16 03:06:58,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:06:58,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512900174] [2021-10-16 03:06:58,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512900174] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:06:58,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:06:58,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:06:58,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816844028] [2021-10-16 03:06:58,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:06:58,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:06:58,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:06:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:58,447 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) [2021-10-16 03:06:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:58,636 INFO L93 Difference]: Finished difference Result 11655 states and 15546 transitions. [2021-10-16 03:06:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:06:58,636 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 [2021-10-16 03:06:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:58,646 INFO L225 Difference]: With dead ends: 11655 [2021-10-16 03:06:58,647 INFO L226 Difference]: Without dead ends: 5395 [2021-10-16 03:06:58,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 1303 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:06:58,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5395 states. [2021-10-16 03:06:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5395 to 4675. [2021-10-16 03:06:58,781 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) [2021-10-16 03:06:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4675 states to 4675 states and 5870 transitions. [2021-10-16 03:06:58,789 INFO L78 Accepts]: Start accepts. Automaton has 4675 states and 5870 transitions. Word has length 653 [2021-10-16 03:06:58,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:58,790 INFO L470 AbstractCegarLoop]: Abstraction has 4675 states and 5870 transitions. [2021-10-16 03:06:58,790 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) [2021-10-16 03:06:58,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4675 states and 5870 transitions. [2021-10-16 03:06:58,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2021-10-16 03:06:58,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:58,803 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] [2021-10-16 03:06:58,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:59,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:59,018 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:59,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2077040329, now seen corresponding path program 1 times [2021-10-16 03:06:59,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:59,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228008355] [2021-10-16 03:06:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:06:59,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:59,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:59,022 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:59,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-16 03:07:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:02,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:07:02,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-16 03:07:03,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-16 03:07:05,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:07:05,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228008355] [2021-10-16 03:07:05,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228008355] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:05,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1392451973] [2021-10-16 03:07:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:05,217 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:07:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:07:05,244 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:07:05,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-10-16 03:07:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:10,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:07:10,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-16 03:07:12,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-16 03:07:13,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1392451973] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:13,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484786150] [2021-10-16 03:07:13,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:13,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:07:13,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:07:13,198 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:07:13,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-16 03:07:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:18,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:07:18,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-16 03:07:19,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5089 backedges. 3059 proven. 26 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2021-10-16 03:07:20,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484786150] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:20,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:07:20,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-16 03:07:20,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242086249] [2021-10-16 03:07:20,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:07:20,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:07:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:07:20,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:07:20,759 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) [2021-10-16 03:07:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:07:21,084 INFO L93 Difference]: Finished difference Result 6013 states and 7520 transitions. [2021-10-16 03:07:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:07:21,085 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 [2021-10-16 03:07:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:07:21,085 INFO L225 Difference]: With dead ends: 6013 [2021-10-16 03:07:21,085 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:07:21,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4152 GetRequests, 4145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:07:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:07:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:07:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:07:21,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 692 [2021-10-16 03:07:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:07:21,089 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:07:21,089 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) [2021-10-16 03:07:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:07:21,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:07:21,092 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:07:21,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-16 03:07:21,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-16 03:07:21,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-10-16 03:07:21,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:07:21,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:07:21,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:21,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:21,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:21,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:21,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:21,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:21,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:22,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:07:25,043 INFO L857 garLoopResultBuilder]: For program point L564(lines 564 570) no Hoare annotation was computed. [2021-10-16 03:07:25,043 INFO L857 garLoopResultBuilder]: For program point L531(lines 531 534) no Hoare annotation was computed. [2021-10-16 03:07:25,043 INFO L857 garLoopResultBuilder]: For program point L564-1(lines 564 570) no Hoare annotation was computed. [2021-10-16 03:07:25,043 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 417) no Hoare annotation was computed. [2021-10-16 03:07:25,043 INFO L853 garLoopResultBuilder]: At program point L201(lines 197 585) 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)))) [2021-10-16 03:07:25,043 INFO L853 garLoopResultBuilder]: At program point L168(lines 164 596) 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 (= 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))) [2021-10-16 03:07:25,043 INFO L853 garLoopResultBuilder]: At program point L135(lines 134 606) 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))) [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 104) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 406) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 504) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L500-2(lines 500 504) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 583) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 594) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 605) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L860 garLoopResultBuilder]: At program point L633(lines 109 634) the Hoare annotation is: true [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L567(lines 567 569) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 272) no Hoare annotation was computed. [2021-10-16 03:07:25,044 INFO L857 garLoopResultBuilder]: For program point L237(lines 237 248) no Hoare annotation was computed. [2021-10-16 03:07:25,045 INFO L857 garLoopResultBuilder]: For program point L237-2(lines 219 576) no Hoare annotation was computed. [2021-10-16 03:07:25,045 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 308) no Hoare annotation was computed. [2021-10-16 03:07:25,045 INFO L857 garLoopResultBuilder]: For program point L304-2(lines 304 308) no Hoare annotation was computed. [2021-10-16 03:07:25,045 INFO L857 garLoopResultBuilder]: For program point L437-1(lines 437 445) no Hoare annotation was computed. [2021-10-16 03:07:25,045 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 242) no Hoare annotation was computed. [2021-10-16 03:07:25,045 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 582) no Hoare annotation was computed. [2021-10-16 03:07:25,045 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 593) no Hoare annotation was computed. [2021-10-16 03:07:25,046 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 604) no Hoare annotation was computed. [2021-10-16 03:07:25,046 INFO L853 garLoopResultBuilder]: At program point L207(lines 203 583) 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))) [2021-10-16 03:07:25,046 INFO L853 garLoopResultBuilder]: At program point L174(lines 170 594) 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))) [2021-10-16 03:07:25,046 INFO L857 garLoopResultBuilder]: For program point L638(lines 638 640) no Hoare annotation was computed. [2021-10-16 03:07:25,046 INFO L857 garLoopResultBuilder]: For program point L638-2(lines 638 640) no Hoare annotation was computed. [2021-10-16 03:07:25,047 INFO L857 garLoopResultBuilder]: For program point L539(lines 539 549) no Hoare annotation was computed. [2021-10-16 03:07:25,047 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 443) no Hoare annotation was computed. [2021-10-16 03:07:25,047 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 379) no Hoare annotation was computed. [2021-10-16 03:07:25,047 INFO L857 garLoopResultBuilder]: For program point L209(lines 209 581) no Hoare annotation was computed. [2021-10-16 03:07:25,047 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 592) no Hoare annotation was computed. [2021-10-16 03:07:25,047 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 603) no Hoare annotation was computed. [2021-10-16 03:07:25,048 INFO L853 garLoopResultBuilder]: At program point L110-2(lines 110 632) 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)))) [2021-10-16 03:07:25,048 INFO L853 garLoopResultBuilder]: At program point L408(lines 399 417) 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))) [2021-10-16 03:07:25,048 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 246) no Hoare annotation was computed. [2021-10-16 03:07:25,048 INFO L853 garLoopResultBuilder]: At program point L177(lines 176 592) 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)))) [2021-10-16 03:07:25,049 INFO L853 garLoopResultBuilder]: At program point L144(lines 137 605) 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))) [2021-10-16 03:07:25,049 INFO L857 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2021-10-16 03:07:25,049 INFO L857 garLoopResultBuilder]: For program point L542(lines 542 548) no Hoare annotation was computed. [2021-10-16 03:07:25,049 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 378) no Hoare annotation was computed. [2021-10-16 03:07:25,049 INFO L857 garLoopResultBuilder]: For program point L344-1(lines 344 378) no Hoare annotation was computed. [2021-10-16 03:07:25,049 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 580) no Hoare annotation was computed. [2021-10-16 03:07:25,050 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 591) no Hoare annotation was computed. [2021-10-16 03:07:25,050 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 602) no Hoare annotation was computed. [2021-10-16 03:07:25,050 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 613) no Hoare annotation was computed. [2021-10-16 03:07:25,050 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 513) no Hoare annotation was computed. [2021-10-16 03:07:25,050 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 479) no Hoare annotation was computed. [2021-10-16 03:07:25,050 INFO L857 garLoopResultBuilder]: For program point L411(lines 411 413) no Hoare annotation was computed. [2021-10-16 03:07:25,051 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 375) no Hoare annotation was computed. [2021-10-16 03:07:25,051 INFO L853 garLoopResultBuilder]: At program point L213(lines 209 581) 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))) [2021-10-16 03:07:25,051 INFO L853 garLoopResultBuilder]: At program point L114(lines 113 613) 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))) [2021-10-16 03:07:25,051 INFO L860 garLoopResultBuilder]: At program point L643(lines 22 645) the Hoare annotation is: true [2021-10-16 03:07:25,052 INFO L853 garLoopResultBuilder]: At program point L577(lines 110 632) 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)))) [2021-10-16 03:07:25,052 INFO L857 garLoopResultBuilder]: For program point L545(lines 545 547) no Hoare annotation was computed. [2021-10-16 03:07:25,052 INFO L857 garLoopResultBuilder]: For program point L545-2(lines 219 576) no Hoare annotation was computed. [2021-10-16 03:07:25,052 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 579) no Hoare annotation was computed. [2021-10-16 03:07:25,052 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 590) no Hoare annotation was computed. [2021-10-16 03:07:25,052 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 601) no Hoare annotation was computed. [2021-10-16 03:07:25,053 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 612) no Hoare annotation was computed. [2021-10-16 03:07:25,053 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 322) no Hoare annotation was computed. [2021-10-16 03:07:25,053 INFO L857 garLoopResultBuilder]: For program point L315-2(lines 315 322) no Hoare annotation was computed. [2021-10-16 03:07:25,053 INFO L860 garLoopResultBuilder]: At program point L216(lines 215 579) the Hoare annotation is: true [2021-10-16 03:07:25,053 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 591) 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))) [2021-10-16 03:07:25,053 INFO L853 garLoopResultBuilder]: At program point L150(lines 146 602) 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))) [2021-10-16 03:07:25,054 INFO L857 garLoopResultBuilder]: For program point L614(lines 614 630) no Hoare annotation was computed. [2021-10-16 03:07:25,054 INFO L857 garLoopResultBuilder]: For program point L515(lines 515 525) no Hoare annotation was computed. [2021-10-16 03:07:25,054 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 373) no Hoare annotation was computed. [2021-10-16 03:07:25,054 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:07:25,054 INFO L860 garLoopResultBuilder]: At program point L218(lines 217 579) the Hoare annotation is: true [2021-10-16 03:07:25,054 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 589) no Hoare annotation was computed. [2021-10-16 03:07:25,055 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 600) no Hoare annotation was computed. [2021-10-16 03:07:25,055 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 611) no Hoare annotation was computed. [2021-10-16 03:07:25,055 INFO L857 garLoopResultBuilder]: For program point L615(lines 615 629) no Hoare annotation was computed. [2021-10-16 03:07:25,055 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 287) no Hoare annotation was computed. [2021-10-16 03:07:25,055 INFO L857 garLoopResultBuilder]: For program point L285-2(lines 219 576) no Hoare annotation was computed. [2021-10-16 03:07:25,055 INFO L857 garLoopResultBuilder]: For program point L616(lines 616 621) no Hoare annotation was computed. [2021-10-16 03:07:25,055 INFO L857 garLoopResultBuilder]: For program point L616-2(lines 615 629) no Hoare annotation was computed. [2021-10-16 03:07:25,056 INFO L857 garLoopResultBuilder]: For program point L451(lines 451 453) no Hoare annotation was computed. [2021-10-16 03:07:25,056 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 321) no Hoare annotation was computed. [2021-10-16 03:07:25,056 INFO L857 garLoopResultBuilder]: For program point L518(lines 518 524) no Hoare annotation was computed. [2021-10-16 03:07:25,056 INFO L857 garLoopResultBuilder]: For program point L353(lines 353 357) no Hoare annotation was computed. [2021-10-16 03:07:25,056 INFO L857 garLoopResultBuilder]: For program point L353-2(lines 353 357) no Hoare annotation was computed. [2021-10-16 03:07:25,056 INFO L857 garLoopResultBuilder]: For program point L254(lines 254 264) no Hoare annotation was computed. [2021-10-16 03:07:25,057 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 588) no Hoare annotation was computed. [2021-10-16 03:07:25,057 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 599) no Hoare annotation was computed. [2021-10-16 03:07:25,057 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 610) no Hoare annotation was computed. [2021-10-16 03:07:25,057 INFO L857 garLoopResultBuilder]: For program point L618(lines 618 620) no Hoare annotation was computed. [2021-10-16 03:07:25,057 INFO L857 garLoopResultBuilder]: For program point L486(lines 486 496) no Hoare annotation was computed. [2021-10-16 03:07:25,057 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 419) no Hoare annotation was computed. [2021-10-16 03:07:25,057 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 258) no Hoare annotation was computed. [2021-10-16 03:07:25,058 INFO L853 garLoopResultBuilder]: At program point L222(lines 116 612) 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))) [2021-10-16 03:07:25,058 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 589) 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))) [2021-10-16 03:07:25,058 INFO L853 garLoopResultBuilder]: At program point L156(lines 152 600) 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))) [2021-10-16 03:07:25,058 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 463) no Hoare annotation was computed. [2021-10-16 03:07:25,058 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 394) no Hoare annotation was computed. [2021-10-16 03:07:25,059 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:07:25,059 INFO L857 garLoopResultBuilder]: For program point L554(lines 554 558) no Hoare annotation was computed. [2021-10-16 03:07:25,059 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 523) no Hoare annotation was computed. [2021-10-16 03:07:25,059 INFO L857 garLoopResultBuilder]: For program point L554-2(lines 554 558) no Hoare annotation was computed. [2021-10-16 03:07:25,059 INFO L857 garLoopResultBuilder]: For program point L521-2(lines 219 576) no Hoare annotation was computed. [2021-10-16 03:07:25,059 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 587) no Hoare annotation was computed. [2021-10-16 03:07:25,059 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 598) no Hoare annotation was computed. [2021-10-16 03:07:25,060 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 609) no Hoare annotation was computed. [2021-10-16 03:07:25,060 INFO L857 garLoopResultBuilder]: For program point L489(lines 489 495) no Hoare annotation was computed. [2021-10-16 03:07:25,060 INFO L857 garLoopResultBuilder]: For program point L489-2(lines 219 576) no Hoare annotation was computed. [2021-10-16 03:07:25,060 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-16 03:07:25,060 INFO L860 garLoopResultBuilder]: At program point L655(lines 646 657) the Hoare annotation is: true [2021-10-16 03:07:25,060 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:07:25,060 INFO L857 garLoopResultBuilder]: For program point L623(lines 623 627) no Hoare annotation was computed. [2021-10-16 03:07:25,061 INFO L857 garLoopResultBuilder]: For program point L458(lines 458 460) no Hoare annotation was computed. [2021-10-16 03:07:25,061 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 229) no Hoare annotation was computed. [2021-10-16 03:07:25,061 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 586) no Hoare annotation was computed. [2021-10-16 03:07:25,061 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 597) no Hoare annotation was computed. [2021-10-16 03:07:25,061 INFO L857 garLoopResultBuilder]: For program point L227-2(lines 227 229) no Hoare annotation was computed. [2021-10-16 03:07:25,061 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 608) no Hoare annotation was computed. [2021-10-16 03:07:25,061 INFO L857 garLoopResultBuilder]: For program point L492(lines 492 494) no Hoare annotation was computed. [2021-10-16 03:07:25,062 INFO L853 garLoopResultBuilder]: At program point L195(lines 191 587) 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))) [2021-10-16 03:07:25,062 INFO L853 garLoopResultBuilder]: At program point L162(lines 158 598) 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))) [2021-10-16 03:07:25,062 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 98) no Hoare annotation was computed. [2021-10-16 03:07:25,062 INFO L857 garLoopResultBuilder]: For program point L96-2(lines 93 99) no Hoare annotation was computed. [2021-10-16 03:07:25,062 INFO L853 garLoopResultBuilder]: At program point L493(lines 83 644) the Hoare annotation is: false [2021-10-16 03:07:25,063 INFO L857 garLoopResultBuilder]: For program point L361(lines 361 369) no Hoare annotation was computed. [2021-10-16 03:07:25,063 INFO L853 garLoopResultBuilder]: At program point L362(lines 338 380) 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))) [2021-10-16 03:07:25,063 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 585) no Hoare annotation was computed. [2021-10-16 03:07:25,063 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 596) no Hoare annotation was computed. [2021-10-16 03:07:25,063 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 607) no Hoare annotation was computed. [2021-10-16 03:07:25,063 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:07:25,064 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 642) no Hoare annotation was computed. [2021-10-16 03:07:25,064 INFO L857 garLoopResultBuilder]: For program point L429(lines 429 431) no Hoare annotation was computed. [2021-10-16 03:07:25,064 INFO L853 garLoopResultBuilder]: At program point L396(lines 387 419) 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))) [2021-10-16 03:07:25,064 INFO L853 garLoopResultBuilder]: At program point L132(lines 128 608) 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))) [2021-10-16 03:07:25,064 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 366) no Hoare annotation was computed. [2021-10-16 03:07:25,065 INFO L857 garLoopResultBuilder]: For program point L298(lines 298 300) no Hoare annotation was computed. [2021-10-16 03:07:25,065 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-10-16 03:07:25,065 INFO L857 garLoopResultBuilder]: For program point L298-2(lines 219 576) no Hoare annotation was computed. [2021-10-16 03:07:25,065 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 336) no Hoare annotation was computed. [2021-10-16 03:07:25,065 INFO L857 garLoopResultBuilder]: For program point L332-2(lines 219 576) no Hoare annotation was computed. [2021-10-16 03:07:25,065 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 584) no Hoare annotation was computed. [2021-10-16 03:07:25,065 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 595) no Hoare annotation was computed. [2021-10-16 03:07:25,066 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 606) no Hoare annotation was computed. [2021-10-16 03:07:25,066 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2021-10-16 03:07:25,066 INFO L857 garLoopResultBuilder]: For program point L101-1(lines 83 644) no Hoare annotation was computed. [2021-10-16 03:07:25,070 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:07:25,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:07:25 BoogieIcfgContainer [2021-10-16 03:07:25,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:07:25,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:07:25,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:07:25,100 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:07:25,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:28" (3/4) ... [2021-10-16 03:07:25,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:07:25,120 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 03:07:25,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:07:25,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:07:25,123 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:07:25,208 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:07:25,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:07:25,210 INFO L168 Benchmark]: Toolchain (without parser) took 118465.62 ms. Allocated memory was 54.5 MB in the beginning and 673.2 MB in the end (delta: 618.7 MB). Free memory was 32.6 MB in the beginning and 184.9 MB in the end (delta: -152.3 MB). Peak memory consumption was 466.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:25,211 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:07:25,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.50 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.4 MB in the beginning and 47.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:25,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.71 ms. Allocated memory is still 67.1 MB. Free memory was 47.1 MB in the beginning and 44.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:25,212 INFO L168 Benchmark]: Boogie Preprocessor took 96.22 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 42.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:25,212 INFO L168 Benchmark]: RCFGBuilder took 892.59 ms. Allocated memory is still 67.1 MB. Free memory was 42.3 MB in the beginning and 34.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:25,213 INFO L168 Benchmark]: TraceAbstraction took 116746.80 ms. Allocated memory was 67.1 MB in the beginning and 673.2 MB in the end (delta: 606.1 MB). Free memory was 34.2 MB in the beginning and 195.4 MB in the end (delta: -161.1 MB). Peak memory consumption was 521.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:25,213 INFO L168 Benchmark]: Witness Printer took 109.48 ms. Allocated memory is still 673.2 MB. Free memory was 195.4 MB in the beginning and 184.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:07:25,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.50 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.4 MB in the beginning and 47.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.71 ms. Allocated memory is still 67.1 MB. Free memory was 47.1 MB in the beginning and 44.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.22 ms. Allocated memory is still 67.1 MB. Free memory was 44.6 MB in the beginning and 42.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 892.59 ms. Allocated memory is still 67.1 MB. Free memory was 42.3 MB in the beginning and 34.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 116746.80 ms. Allocated memory was 67.1 MB in the beginning and 673.2 MB in the end (delta: 606.1 MB). Free memory was 34.2 MB in the beginning and 195.4 MB in the end (delta: -161.1 MB). Peak memory consumption was 521.3 MB. Max. memory is 16.1 GB. * Witness Printer took 109.48 ms. Allocated memory is still 673.2 MB. Free memory was 195.4 MB in the beginning and 184.9 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: 642]: 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: 116620.5ms, OverallIterations: 25, TraceHistogramMax: 21, EmptinessCheckTime: 330.9ms, AutomataDifference: 5843.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3335.5ms, InitialAbstractionConstructionTime: 39.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5883 SDtfs, 3250 SDslu, 5782 SDs, 0 SdLazy, 2764 SolverSat, 619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2528.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21548 GetRequests, 21498 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 217.3ms 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: 2617.7ms AutomataMinimizationTime, 25 MinimizatonAttempts, 5208 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 286 NumberOfFragments, 1269 HoareAnnotationTreeSize, 28 FomulaSimplifications, 23076 FormulaSimplificationTreeSizeReduction, 1019.5ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 2614 FormulaSimplificationTreeSizeReductionInter, 2303.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 582.9ms SsaConstructionTime, 2986.4ms SatisfiabilityAnalysisTime, 44684.5ms 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: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 646]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: 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: 134]: 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: 215]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 203]: 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: 399]: 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: 191]: 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: 137]: 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: 217]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 110]: 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: 83]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 116]: Loop Invariant Derived loop invariant: (((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: (((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 176]: 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: 185]: 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: 387]: 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: 209]: 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: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (((4bv32 == blastFlag && !(8641bv32 == s__state)) && !(8656bv32 == s__state)) && !(s__hit == 0bv32)) && !(8640bv32 == s__state) - InvariantResult [Line: 338]: 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: 152]: 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: 170]: 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: 179]: 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: 146]: 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: 197]: 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: 110]: 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: 158]: 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)) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:07:25,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c4f6a6-2b8d-47d2-bab4-8047cbc07224/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...