./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label39.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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label39.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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 84a6ad2db8111b8f127eba67b6f3c05b2a795f20 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label39.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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 84a6ad2db8111b8f127eba67b6f3c05b2a795f20 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:08:34,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:34,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:34,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:34,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:34,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:34,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:34,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:34,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:34,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:34,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:34,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:34,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:34,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:34,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:34,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:34,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:34,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:34,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:34,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:34,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:34,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:34,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:34,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:34,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:34,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:34,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:34,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:34,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:34,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:34,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:34,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:34,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:34,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:34,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:34,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:34,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:34,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:34,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:34,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:34,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:34,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:08:34,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:34,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:34,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:34,523 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:34,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:34,523 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:34,524 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:08:34,524 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:34,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:34,524 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:08:34,524 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:08:34,525 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:34,525 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:08:34,525 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:08:34,526 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:08:34,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:34,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:34,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:08:34,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:34,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:34,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:08:34,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:34,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:08:34,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:34,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:34,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:08:34,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:34,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:08:34,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:34,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:34,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:34,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:34,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:34,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:08:34,531 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:08:34,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:08:34,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:08:34,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:34,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:34,532 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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84a6ad2db8111b8f127eba67b6f3c05b2a795f20 [2021-10-16 02:08:34,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:34,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:34,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:34,825 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:34,826 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:34,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem02_label39.c [2021-10-16 02:08:34,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/899bd326f/3903374297864a1ebb5439d13a478743/FLAG59d052faa [2021-10-16 02:08:35,484 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:35,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/sv-benchmarks/c/eca-rers2012/Problem02_label39.c [2021-10-16 02:08:35,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/899bd326f/3903374297864a1ebb5439d13a478743/FLAG59d052faa [2021-10-16 02:08:35,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/899bd326f/3903374297864a1ebb5439d13a478743 [2021-10-16 02:08:35,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:35,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:35,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:35,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:35,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:35,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:35" (1/1) ... [2021-10-16 02:08:35,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1357dcee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:35, skipping insertion in model container [2021-10-16 02:08:35,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:35" (1/1) ... [2021-10-16 02:08:35,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:35,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:36,181 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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/sv-benchmarks/c/eca-rers2012/Problem02_label39.c[18036,18049] [2021-10-16 02:08:36,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:36,231 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:08:36,367 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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/sv-benchmarks/c/eca-rers2012/Problem02_label39.c[18036,18049] [2021-10-16 02:08:36,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:36,413 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:08:36,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36 WrapperNode [2021-10-16 02:08:36,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:36,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:36,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:08:36,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:08:36,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:36,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:08:36,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:08:36,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:08:36,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:08:36,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:08:36,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:08:36,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:08:36,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (1/1) ... [2021-10-16 02:08:36,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:36,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:36,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:08:36,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:08:36,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:08:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:08:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:08:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:08:38,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:08:38,672 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:08:38,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:38 BoogieIcfgContainer [2021-10-16 02:08:38,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:08:38,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:08:38,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:08:38,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:08:38,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:08:35" (1/3) ... [2021-10-16 02:08:38,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7f81ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:38, skipping insertion in model container [2021-10-16 02:08:38,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:36" (2/3) ... [2021-10-16 02:08:38,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7f81ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:38, skipping insertion in model container [2021-10-16 02:08:38,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:38" (3/3) ... [2021-10-16 02:08:38,689 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label39.c [2021-10-16 02:08:38,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:08:38,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:08:38,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:08:38,767 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 02:08:38,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:08:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-16 02:08:38,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:38,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:38,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:38,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1814579223, now seen corresponding path program 1 times [2021-10-16 02:08:38,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:38,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584349048] [2021-10-16 02:08:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:38,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:39,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:39,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584349048] [2021-10-16 02:08:39,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584349048] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:39,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:39,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:08:39,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931563386] [2021-10-16 02:08:39,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:39,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:39,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:39,286 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:39,703 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-16 02:08:39,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 02:08:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:39,717 INFO L225 Difference]: With dead ends: 251 [2021-10-16 02:08:39,717 INFO L226 Difference]: Without dead ends: 163 [2021-10-16 02:08:39,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:39,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-16 02:08:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-16 02:08:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-16 02:08:39,773 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-16 02:08:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:39,774 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-16 02:08:39,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-16 02:08:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-16 02:08:39,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:39,779 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:39,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:08:39,780 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:39,781 INFO L82 PathProgramCache]: Analyzing trace with hash 625151884, now seen corresponding path program 1 times [2021-10-16 02:08:39,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:39,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601762240] [2021-10-16 02:08:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:39,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:39,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:39,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601762240] [2021-10-16 02:08:39,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601762240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:39,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:39,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:08:39,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561220749] [2021-10-16 02:08:39,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:39,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:39,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:39,849 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:40,212 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-16 02:08:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-10-16 02:08:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:40,216 INFO L225 Difference]: With dead ends: 485 [2021-10-16 02:08:40,216 INFO L226 Difference]: Without dead ends: 323 [2021-10-16 02:08:40,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-16 02:08:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-16 02:08:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 322 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 484 transitions. [2021-10-16 02:08:40,242 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 484 transitions. Word has length 84 [2021-10-16 02:08:40,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:40,242 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 484 transitions. [2021-10-16 02:08:40,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 484 transitions. [2021-10-16 02:08:40,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-16 02:08:40,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:40,247 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:40,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:08:40,247 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1659811281, now seen corresponding path program 1 times [2021-10-16 02:08:40,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:40,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772780309] [2021-10-16 02:08:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:40,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:40,329 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 02:08:40,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:40,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772780309] [2021-10-16 02:08:40,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772780309] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:40,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:40,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:40,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906319157] [2021-10-16 02:08:40,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:40,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:40,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:40,333 INFO L87 Difference]: Start difference. First operand 323 states and 484 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:40,689 INFO L93 Difference]: Finished difference Result 805 states and 1263 transitions. [2021-10-16 02:08:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-10-16 02:08:40,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:40,693 INFO L225 Difference]: With dead ends: 805 [2021-10-16 02:08:40,693 INFO L226 Difference]: Without dead ends: 483 [2021-10-16 02:08:40,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:40,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-16 02:08:40,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-16 02:08:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3983402489626555) internal successors, (674), 482 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2021-10-16 02:08:40,717 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 89 [2021-10-16 02:08:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:40,718 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2021-10-16 02:08:40,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2021-10-16 02:08:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-16 02:08:40,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:40,723 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:40,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:08:40,724 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1696188123, now seen corresponding path program 1 times [2021-10-16 02:08:40,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:40,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727000114] [2021-10-16 02:08:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:40,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:40,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:40,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727000114] [2021-10-16 02:08:40,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727000114] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:40,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:40,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:08:40,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021946838] [2021-10-16 02:08:40,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:40,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:40,770 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:41,157 INFO L93 Difference]: Finished difference Result 1285 states and 1833 transitions. [2021-10-16 02:08:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-10-16 02:08:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:41,163 INFO L225 Difference]: With dead ends: 1285 [2021-10-16 02:08:41,163 INFO L226 Difference]: Without dead ends: 803 [2021-10-16 02:08:41,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:08:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-16 02:08:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-10-16 02:08:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.3591022443890275) internal successors, (1090), 802 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1090 transitions. [2021-10-16 02:08:41,190 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1090 transitions. Word has length 90 [2021-10-16 02:08:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:41,191 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1090 transitions. [2021-10-16 02:08:41,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1090 transitions. [2021-10-16 02:08:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-16 02:08:41,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:41,194 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:41,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:08:41,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:41,196 INFO L82 PathProgramCache]: Analyzing trace with hash -80522503, now seen corresponding path program 1 times [2021-10-16 02:08:41,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:41,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661029897] [2021-10-16 02:08:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:41,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:41,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:41,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661029897] [2021-10-16 02:08:41,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661029897] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:41,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:41,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:41,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121951961] [2021-10-16 02:08:41,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:41,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:41,246 INFO L87 Difference]: Start difference. First operand 803 states and 1090 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:41,588 INFO L93 Difference]: Finished difference Result 1925 states and 2605 transitions. [2021-10-16 02:08:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:41,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-10-16 02:08:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:41,595 INFO L225 Difference]: With dead ends: 1925 [2021-10-16 02:08:41,596 INFO L226 Difference]: Without dead ends: 1123 [2021-10-16 02:08:41,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-16 02:08:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-16 02:08:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.2789661319073085) internal successors, (1435), 1122 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1435 transitions. [2021-10-16 02:08:41,631 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1435 transitions. Word has length 93 [2021-10-16 02:08:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:41,631 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1435 transitions. [2021-10-16 02:08:41,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1435 transitions. [2021-10-16 02:08:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-16 02:08:41,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:41,635 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:41,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:08:41,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:41,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1105135000, now seen corresponding path program 1 times [2021-10-16 02:08:41,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:41,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365381849] [2021-10-16 02:08:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:41,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:41,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:41,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365381849] [2021-10-16 02:08:41,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365381849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:41,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:41,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:41,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114377327] [2021-10-16 02:08:41,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:41,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:41,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:41,688 INFO L87 Difference]: Start difference. First operand 1123 states and 1435 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 02:08:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:41,986 INFO L93 Difference]: Finished difference Result 2245 states and 2869 transitions. [2021-10-16 02:08:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:41,987 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 109 [2021-10-16 02:08:41,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:41,993 INFO L225 Difference]: With dead ends: 2245 [2021-10-16 02:08:41,994 INFO L226 Difference]: Without dead ends: 1123 [2021-10-16 02:08:41,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-16 02:08:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-16 02:08:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.2299465240641712) internal successors, (1380), 1122 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1380 transitions. [2021-10-16 02:08:42,045 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1380 transitions. Word has length 109 [2021-10-16 02:08:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:42,046 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1380 transitions. [2021-10-16 02:08:42,047 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 02:08:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1380 transitions. [2021-10-16 02:08:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-16 02:08:42,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:42,050 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:42,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:08:42,051 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:42,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1872804402, now seen corresponding path program 1 times [2021-10-16 02:08:42,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:42,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205079588] [2021-10-16 02:08:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:42,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:42,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:42,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205079588] [2021-10-16 02:08:42,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205079588] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:42,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:42,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:42,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041189224] [2021-10-16 02:08:42,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:42,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:42,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:42,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:42,138 INFO L87 Difference]: Start difference. First operand 1123 states and 1380 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:42,447 INFO L93 Difference]: Finished difference Result 2565 states and 3261 transitions. [2021-10-16 02:08:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:42,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-10-16 02:08:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:42,456 INFO L225 Difference]: With dead ends: 2565 [2021-10-16 02:08:42,456 INFO L226 Difference]: Without dead ends: 1443 [2021-10-16 02:08:42,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:42,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-16 02:08:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-16 02:08:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.253120665742025) internal successors, (1807), 1442 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1807 transitions. [2021-10-16 02:08:42,494 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1807 transitions. Word has length 113 [2021-10-16 02:08:42,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:42,494 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1807 transitions. [2021-10-16 02:08:42,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1807 transitions. [2021-10-16 02:08:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-16 02:08:42,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:42,498 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:42,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:08:42,499 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:42,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1413215113, now seen corresponding path program 1 times [2021-10-16 02:08:42,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:42,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053809442] [2021-10-16 02:08:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:42,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:08:42,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:42,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053809442] [2021-10-16 02:08:42,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053809442] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:42,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:42,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:42,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874753457] [2021-10-16 02:08:42,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:42,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:42,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:42,626 INFO L87 Difference]: Start difference. First operand 1443 states and 1807 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:43,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:43,193 INFO L93 Difference]: Finished difference Result 3363 states and 4197 transitions. [2021-10-16 02:08:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:08:43,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 114 [2021-10-16 02:08:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:43,208 INFO L225 Difference]: With dead ends: 3363 [2021-10-16 02:08:43,208 INFO L226 Difference]: Without dead ends: 1843 [2021-10-16 02:08:43,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-10-16 02:08:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1523. [2021-10-16 02:08:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.243101182654402) internal successors, (1892), 1522 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1892 transitions. [2021-10-16 02:08:43,257 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1892 transitions. Word has length 114 [2021-10-16 02:08:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:43,257 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1892 transitions. [2021-10-16 02:08:43,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1892 transitions. [2021-10-16 02:08:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-10-16 02:08:43,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:43,262 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:43,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:08:43,262 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash -729210779, now seen corresponding path program 1 times [2021-10-16 02:08:43,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:43,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998474189] [2021-10-16 02:08:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:43,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:08:43,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:43,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998474189] [2021-10-16 02:08:43,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998474189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:43,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:43,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:43,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068147942] [2021-10-16 02:08:43,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:43,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:43,328 INFO L87 Difference]: Start difference. First operand 1523 states and 1892 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 02:08:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:43,656 INFO L93 Difference]: Finished difference Result 3445 states and 4337 transitions. [2021-10-16 02:08:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:43,657 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 144 [2021-10-16 02:08:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:43,667 INFO L225 Difference]: With dead ends: 3445 [2021-10-16 02:08:43,667 INFO L226 Difference]: Without dead ends: 1683 [2021-10-16 02:08:43,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-10-16 02:08:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1523. [2021-10-16 02:08:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.2194480946123523) internal successors, (1856), 1522 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1856 transitions. [2021-10-16 02:08:43,713 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1856 transitions. Word has length 144 [2021-10-16 02:08:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:43,714 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1856 transitions. [2021-10-16 02:08:43,714 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 02:08:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1856 transitions. [2021-10-16 02:08:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-10-16 02:08:43,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:43,719 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:43,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:08:43,719 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:43,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1029736230, now seen corresponding path program 1 times [2021-10-16 02:08:43,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:43,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692702284] [2021-10-16 02:08:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:43,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-16 02:08:43,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:43,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692702284] [2021-10-16 02:08:43,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692702284] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:43,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:43,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:43,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100171239] [2021-10-16 02:08:43,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:43,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:43,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:43,782 INFO L87 Difference]: Start difference. First operand 1523 states and 1856 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 02:08:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:44,127 INFO L93 Difference]: Finished difference Result 3685 states and 4591 transitions. [2021-10-16 02:08:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:44,128 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 152 [2021-10-16 02:08:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:44,141 INFO L225 Difference]: With dead ends: 3685 [2021-10-16 02:08:44,141 INFO L226 Difference]: Without dead ends: 2083 [2021-10-16 02:08:44,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-10-16 02:08:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1843. [2021-10-16 02:08:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.230184581976113) internal successors, (2266), 1842 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2266 transitions. [2021-10-16 02:08:44,196 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2266 transitions. Word has length 152 [2021-10-16 02:08:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:44,197 INFO L470 AbstractCegarLoop]: Abstraction has 1843 states and 2266 transitions. [2021-10-16 02:08:44,197 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 02:08:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2266 transitions. [2021-10-16 02:08:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-16 02:08:44,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:44,201 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1] [2021-10-16 02:08:44,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:08:44,202 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1927542294, now seen corresponding path program 1 times [2021-10-16 02:08:44,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:44,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794383150] [2021-10-16 02:08:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:44,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:44,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:44,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794383150] [2021-10-16 02:08:44,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794383150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:44,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:44,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:08:44,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117758897] [2021-10-16 02:08:44,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:44,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:44,295 INFO L87 Difference]: Start difference. First operand 1843 states and 2266 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 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 02:08:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:44,753 INFO L93 Difference]: Finished difference Result 3845 states and 4731 transitions. [2021-10-16 02:08:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:08:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 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) Word has length 178 [2021-10-16 02:08:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:44,763 INFO L225 Difference]: With dead ends: 3845 [2021-10-16 02:08:44,763 INFO L226 Difference]: Without dead ends: 1763 [2021-10-16 02:08:44,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-16 02:08:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1683. [2021-10-16 02:08:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.1450653983353152) internal successors, (1926), 1682 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 1926 transitions. [2021-10-16 02:08:44,846 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 1926 transitions. Word has length 178 [2021-10-16 02:08:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:44,846 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 1926 transitions. [2021-10-16 02:08:44,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 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 02:08:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 1926 transitions. [2021-10-16 02:08:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-16 02:08:44,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:44,851 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:08:44,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:08:44,852 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1822699898, now seen corresponding path program 1 times [2021-10-16 02:08:44,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:44,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092668365] [2021-10-16 02:08:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:44,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 109 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:44,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:44,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092668365] [2021-10-16 02:08:44,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092668365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:08:44,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603400405] [2021-10-16 02:08:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:44,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:44,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:44,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:08:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:45,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:08:45,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:08:45,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-16 02:08:46,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603400405] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:46,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:08:46,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-16 02:08:46,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964134319] [2021-10-16 02:08:46,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:46,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:46,101 INFO L87 Difference]: Start difference. First operand 1683 states and 1926 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:46,368 INFO L93 Difference]: Finished difference Result 3685 states and 4210 transitions. [2021-10-16 02:08:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:46,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 184 [2021-10-16 02:08:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:46,377 INFO L225 Difference]: With dead ends: 3685 [2021-10-16 02:08:46,377 INFO L226 Difference]: Without dead ends: 1523 [2021-10-16 02:08:46,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:08:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-16 02:08:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-10-16 02:08:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.1136662286465178) internal successors, (1695), 1522 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1695 transitions. [2021-10-16 02:08:46,448 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1695 transitions. Word has length 184 [2021-10-16 02:08:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:46,448 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1695 transitions. [2021-10-16 02:08:46,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1695 transitions. [2021-10-16 02:08:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-16 02:08:46,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:46,453 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:08:46,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:46,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-16 02:08:46,667 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:46,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:46,668 INFO L82 PathProgramCache]: Analyzing trace with hash -32391208, now seen corresponding path program 1 times [2021-10-16 02:08:46,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:46,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696699075] [2021-10-16 02:08:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:46,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 93 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:46,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:46,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696699075] [2021-10-16 02:08:46,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696699075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:08:46,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237467470] [2021-10-16 02:08:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:46,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:46,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:46,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:46,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:08:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:47,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:08:47,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:08:47,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-16 02:08:48,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237467470] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:48,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:08:48,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-16 02:08:48,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566770229] [2021-10-16 02:08:48,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:48,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:48,223 INFO L87 Difference]: Start difference. First operand 1523 states and 1695 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:48,491 INFO L93 Difference]: Finished difference Result 3605 states and 4063 transitions. [2021-10-16 02:08:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:48,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 210 [2021-10-16 02:08:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:48,502 INFO L225 Difference]: With dead ends: 3605 [2021-10-16 02:08:48,502 INFO L226 Difference]: Without dead ends: 1923 [2021-10-16 02:08:48,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2021-10-16 02:08:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1763. [2021-10-16 02:08:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.1174801362088536) internal successors, (1969), 1762 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 1969 transitions. [2021-10-16 02:08:48,557 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 1969 transitions. Word has length 210 [2021-10-16 02:08:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:48,558 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 1969 transitions. [2021-10-16 02:08:48,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 1969 transitions. [2021-10-16 02:08:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-16 02:08:48,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:48,563 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-16 02:08:48,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:48,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-16 02:08:48,789 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:48,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1990118130, now seen corresponding path program 1 times [2021-10-16 02:08:48,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:48,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750704535] [2021-10-16 02:08:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:48,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:48,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:48,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750704535] [2021-10-16 02:08:48,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750704535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:48,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:48,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:08:48,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483159834] [2021-10-16 02:08:48,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:48,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:48,892 INFO L87 Difference]: Start difference. First operand 1763 states and 1969 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:49,169 INFO L93 Difference]: Finished difference Result 3525 states and 3937 transitions. [2021-10-16 02:08:49,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:49,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2021-10-16 02:08:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:49,178 INFO L225 Difference]: With dead ends: 3525 [2021-10-16 02:08:49,178 INFO L226 Difference]: Without dead ends: 1603 [2021-10-16 02:08:49,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-10-16 02:08:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1603. [2021-10-16 02:08:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 1.0930087390761547) internal successors, (1751), 1602 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1751 transitions. [2021-10-16 02:08:49,226 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1751 transitions. Word has length 213 [2021-10-16 02:08:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:49,226 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 1751 transitions. [2021-10-16 02:08:49,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1751 transitions. [2021-10-16 02:08:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-10-16 02:08:49,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:49,231 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:08:49,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 02:08:49,232 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:08:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1686472139, now seen corresponding path program 1 times [2021-10-16 02:08:49,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:49,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22625952] [2021-10-16 02:08:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:49,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 167 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-16 02:08:49,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:49,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22625952] [2021-10-16 02:08:49,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22625952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:08:49,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244149634] [2021-10-16 02:08:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:49,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:49,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:49,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:49,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:08:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:49,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:08:49,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 266 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:51,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 266 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:53,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244149634] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:53,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106611952] [2021-10-16 02:08:53,702 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2021-10-16 02:08:53,702 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:08:53,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:08:53,718 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:08:53,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:08:54,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:54,054 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:08:54,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:54,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:08:54,058 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:08:54,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:54,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:08:54,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-16 02:08:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:08:54,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:08:54,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:08:54,115 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 02:08:54,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:54,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:08:54,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:54,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:08:54,118 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:08:54,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:08:54,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:54,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:54,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-16 02:08:54,144 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:08:54,144 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:170, output treesize:173 [2021-10-16 02:08:54,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:54,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:54,367 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_10| 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 02:08:54,370 INFO L168 Benchmark]: Toolchain (without parser) took 18648.39 ms. Allocated memory was 100.7 MB in the beginning and 262.1 MB in the end (delta: 161.5 MB). Free memory was 61.3 MB in the beginning and 88.2 MB in the end (delta: -26.9 MB). Peak memory consumption was 133.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:54,371 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 100.7 MB. Free memory was 79.2 MB in the beginning and 79.1 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:54,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.24 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 60.2 MB in the end (delta: 888.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:54,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.73 ms. Allocated memory is still 100.7 MB. Free memory was 60.2 MB in the beginning and 54.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:54,372 INFO L168 Benchmark]: Boogie Preprocessor took 73.55 ms. Allocated memory is still 100.7 MB. Free memory was 54.7 MB in the beginning and 50.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:54,372 INFO L168 Benchmark]: RCFGBuilder took 2084.44 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 50.5 MB in the beginning and 68.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:54,373 INFO L168 Benchmark]: TraceAbstraction took 15689.03 ms. Allocated memory was 132.1 MB in the beginning and 262.1 MB in the end (delta: 130.0 MB). Free memory was 68.1 MB in the beginning and 88.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 109.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:54,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 100.7 MB. Free memory was 79.2 MB in the beginning and 79.1 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 688.24 ms. Allocated memory is still 100.7 MB. Free memory was 61.1 MB in the beginning and 60.2 MB in the end (delta: 888.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.73 ms. Allocated memory is still 100.7 MB. Free memory was 60.2 MB in the beginning and 54.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.55 ms. Allocated memory is still 100.7 MB. Free memory was 54.7 MB in the beginning and 50.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2084.44 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 50.5 MB in the beginning and 68.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15689.03 ms. Allocated memory was 132.1 MB in the beginning and 262.1 MB in the end (delta: 130.0 MB). Free memory was 68.1 MB in the beginning and 88.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 109.1 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_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: 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 02:08:54,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:08:56,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:56,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:56,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:56,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:56,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:56,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:56,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:56,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:56,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:56,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:56,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:56,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:56,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:56,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:56,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:56,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:56,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:56,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:56,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:56,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:56,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:56,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:56,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:56,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:56,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:56,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:56,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:56,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:56,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:56,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:56,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:56,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:56,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:56,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:56,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:56,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:56,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:56,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:56,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:56,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:56,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:08:57,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:57,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:57,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:57,036 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:57,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:57,036 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:57,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:57,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:57,038 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:57,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:57,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:57,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:57,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:57,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:08:57,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:57,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:08:57,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:57,042 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:08:57,042 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:08:57,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:57,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:08:57,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:57,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:08:57,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:57,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:08:57,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:57,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:57,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:57,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:57,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:08:57,045 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:08:57,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:57,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:08:57,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:57,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:57,046 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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84a6ad2db8111b8f127eba67b6f3c05b2a795f20 [2021-10-16 02:08:57,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:57,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:57,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:57,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:57,443 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:57,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem02_label39.c [2021-10-16 02:08:57,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/8d9f9ffae/b52e0ebd50c14ef6b06faa38c8b4b3e8/FLAG8f623a2fd [2021-10-16 02:08:58,147 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:58,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/sv-benchmarks/c/eca-rers2012/Problem02_label39.c [2021-10-16 02:08:58,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/8d9f9ffae/b52e0ebd50c14ef6b06faa38c8b4b3e8/FLAG8f623a2fd [2021-10-16 02:08:58,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/data/8d9f9ffae/b52e0ebd50c14ef6b06faa38c8b4b3e8 [2021-10-16 02:08:58,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:58,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:58,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:58,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:58,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:58,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:58" (1/1) ... [2021-10-16 02:08:58,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3060b5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:58, skipping insertion in model container [2021-10-16 02:08:58,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:58" (1/1) ... [2021-10-16 02:08:58,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:58,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:58,884 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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/sv-benchmarks/c/eca-rers2012/Problem02_label39.c[18036,18049] [2021-10-16 02:08:58,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:58,991 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:08:59,104 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_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/sv-benchmarks/c/eca-rers2012/Problem02_label39.c[18036,18049] [2021-10-16 02:08:59,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:59,135 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:08:59,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59 WrapperNode [2021-10-16 02:08:59,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:59,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:59,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:08:59,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:08:59,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:59,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:08:59,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:08:59,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:08:59,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:08:59,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:08:59,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:08:59,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:08:59,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (1/1) ... [2021-10-16 02:08:59,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:59,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:08:59,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:08:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:08:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:08:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:08:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:09:00,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:09:00,821 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:09:00,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:00 BoogieIcfgContainer [2021-10-16 02:09:00,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:09:00,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:09:00,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:09:00,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:09:00,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:08:58" (1/3) ... [2021-10-16 02:09:00,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67550e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:09:00, skipping insertion in model container [2021-10-16 02:09:00,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:59" (2/3) ... [2021-10-16 02:09:00,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67550e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:09:00, skipping insertion in model container [2021-10-16 02:09:00,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:00" (3/3) ... [2021-10-16 02:09:00,839 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label39.c [2021-10-16 02:09:00,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:09:00,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:09:00,909 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:09:00,918 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 02:09:00,918 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:09:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 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 02:09:00,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-16 02:09:00,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:00,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:00,994 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:01,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:01,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1738135197, now seen corresponding path program 1 times [2021-10-16 02:09:01,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:01,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041021953] [2021-10-16 02:09:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:01,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:01,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:01,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:01,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:09:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:01,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:09:01,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:08,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:11,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:11,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041021953] [2021-10-16 02:09:11,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041021953] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:11,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:11,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-16 02:09:11,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250843849] [2021-10-16 02:09:11,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:09:11,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:09:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:09:11,885 INFO L87 Difference]: Start difference. First operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 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) Second operand has 15 states, 15 states have (on average 11.0) internal successors, (165), 14 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:14,988 INFO L93 Difference]: Finished difference Result 986 states and 1761 transitions. [2021-10-16 02:09:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:09:14,990 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.0) internal successors, (165), 14 states have internal predecessors, (165), 0 states have call successors, (0), 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 111 [2021-10-16 02:09:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:15,009 INFO L225 Difference]: With dead ends: 986 [2021-10-16 02:09:15,010 INFO L226 Difference]: Without dead ends: 660 [2021-10-16 02:09:15,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 673.4ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:09:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-16 02:09:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 507. [2021-10-16 02:09:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 1.4505928853754941) internal successors, (734), 506 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 734 transitions. [2021-10-16 02:09:15,085 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 734 transitions. Word has length 111 [2021-10-16 02:09:15,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:15,086 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 734 transitions. [2021-10-16 02:09:15,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.0) internal successors, (165), 14 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:15,087 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 734 transitions. [2021-10-16 02:09:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-16 02:09:15,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:15,093 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:15,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:09:15,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:15,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:15,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2049811925, now seen corresponding path program 1 times [2021-10-16 02:09:15,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:15,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540013337] [2021-10-16 02:09:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:15,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:15,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:15,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:15,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:09:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:15,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:15,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:16,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:16,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:16,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540013337] [2021-10-16 02:09:16,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540013337] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:16,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:16,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:09:16,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671320794] [2021-10-16 02:09:16,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:09:16,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:09:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:09:16,679 INFO L87 Difference]: Start difference. First operand 507 states and 734 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:17,304 INFO L93 Difference]: Finished difference Result 1436 states and 2076 transitions. [2021-10-16 02:09:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-10-16 02:09:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:17,311 INFO L225 Difference]: With dead ends: 1436 [2021-10-16 02:09:17,312 INFO L226 Difference]: Without dead ends: 931 [2021-10-16 02:09:17,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 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 02:09:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-10-16 02:09:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 790. [2021-10-16 02:09:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.3447401774397971) internal successors, (1061), 789 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1061 transitions. [2021-10-16 02:09:17,354 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1061 transitions. Word has length 128 [2021-10-16 02:09:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:17,355 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 1061 transitions. [2021-10-16 02:09:17,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1061 transitions. [2021-10-16 02:09:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-16 02:09:17,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:17,362 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:17,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:17,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:17,574 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1538775451, now seen corresponding path program 1 times [2021-10-16 02:09:17,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:17,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731306815] [2021-10-16 02:09:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:17,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:17,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:17,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:17,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:09:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:18,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:18,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:18,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:09:18,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:18,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731306815] [2021-10-16 02:09:18,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731306815] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:18,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:18,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:09:18,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205897570] [2021-10-16 02:09:18,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:09:18,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:09:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:09:18,888 INFO L87 Difference]: Start difference. First operand 790 states and 1061 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:19,442 INFO L93 Difference]: Finished difference Result 1577 states and 2119 transitions. [2021-10-16 02:09:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:19,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:09:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:19,447 INFO L225 Difference]: With dead ends: 1577 [2021-10-16 02:09:19,448 INFO L226 Difference]: Without dead ends: 789 [2021-10-16 02:09:19,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 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 02:09:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-10-16 02:09:19,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 789. [2021-10-16 02:09:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.236040609137056) internal successors, (974), 788 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 974 transitions. [2021-10-16 02:09:19,472 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 974 transitions. Word has length 139 [2021-10-16 02:09:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:19,473 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 974 transitions. [2021-10-16 02:09:19,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 974 transitions. [2021-10-16 02:09:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-10-16 02:09:19,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:19,477 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:19,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:19,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:19,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:19,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:19,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2126825839, now seen corresponding path program 1 times [2021-10-16 02:09:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:19,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929991810] [2021-10-16 02:09:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:19,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:19,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:19,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:09:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:20,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:09:20,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-16 02:09:20,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-16 02:09:21,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:21,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929991810] [2021-10-16 02:09:21,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929991810] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:21,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:21,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:09:21,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701555455] [2021-10-16 02:09:21,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:21,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:21,216 INFO L87 Difference]: Start difference. First operand 789 states and 974 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:22,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:22,289 INFO L93 Difference]: Finished difference Result 2700 states and 3299 transitions. [2021-10-16 02:09:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:09:22,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 161 [2021-10-16 02:09:22,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:22,299 INFO L225 Difference]: With dead ends: 2700 [2021-10-16 02:09:22,300 INFO L226 Difference]: Without dead ends: 1773 [2021-10-16 02:09:22,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2021-10-16 02:09:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1772. [2021-10-16 02:09:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 1.1750423489553925) internal successors, (2081), 1771 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2081 transitions. [2021-10-16 02:09:22,355 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2081 transitions. Word has length 161 [2021-10-16 02:09:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:22,355 INFO L470 AbstractCegarLoop]: Abstraction has 1772 states and 2081 transitions. [2021-10-16 02:09:22,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:22,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2081 transitions. [2021-10-16 02:09:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-16 02:09:22,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:22,362 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:22,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:22,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:22,575 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:22,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:22,576 INFO L82 PathProgramCache]: Analyzing trace with hash 361068569, now seen corresponding path program 1 times [2021-10-16 02:09:22,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:22,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425718032] [2021-10-16 02:09:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:22,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:22,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:22,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:09:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:23,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:23,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:09:23,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:09:24,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:24,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425718032] [2021-10-16 02:09:24,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425718032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:24,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:24,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:09:24,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518432100] [2021-10-16 02:09:24,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:09:24,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:09:24,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:09:24,074 INFO L87 Difference]: Start difference. First operand 1772 states and 2081 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:24,678 INFO L93 Difference]: Finished difference Result 4239 states and 5069 transitions. [2021-10-16 02:09:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 166 [2021-10-16 02:09:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:24,693 INFO L225 Difference]: With dead ends: 4239 [2021-10-16 02:09:24,693 INFO L226 Difference]: Without dead ends: 2048 [2021-10-16 02:09:24,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 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 02:09:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-10-16 02:09:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 2047. [2021-10-16 02:09:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 1.1578690127077225) internal successors, (2369), 2046 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2369 transitions. [2021-10-16 02:09:24,753 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2369 transitions. Word has length 166 [2021-10-16 02:09:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:24,753 INFO L470 AbstractCegarLoop]: Abstraction has 2047 states and 2369 transitions. [2021-10-16 02:09:24,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2369 transitions. [2021-10-16 02:09:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-10-16 02:09:24,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:24,760 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:24,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 02:09:24,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:24,976 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:24,976 INFO L82 PathProgramCache]: Analyzing trace with hash -515412133, now seen corresponding path program 1 times [2021-10-16 02:09:24,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:24,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789533065] [2021-10-16 02:09:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:24,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:24,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:24,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:24,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:09:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:25,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:25,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-16 02:09:26,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-16 02:09:26,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:26,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789533065] [2021-10-16 02:09:26,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789533065] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:26,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:26,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:09:26,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181435528] [2021-10-16 02:09:26,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:26,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:26,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:26,514 INFO L87 Difference]: Start difference. First operand 2047 states and 2369 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:26,972 INFO L93 Difference]: Finished difference Result 4092 states and 4736 transitions. [2021-10-16 02:09:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:09:26,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 167 [2021-10-16 02:09:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:26,983 INFO L225 Difference]: With dead ends: 4092 [2021-10-16 02:09:26,983 INFO L226 Difference]: Without dead ends: 2047 [2021-10-16 02:09:26,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2021-10-16 02:09:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2047. [2021-10-16 02:09:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 1.1334310850439884) internal successors, (2319), 2046 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2319 transitions. [2021-10-16 02:09:27,037 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2319 transitions. Word has length 167 [2021-10-16 02:09:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:27,038 INFO L470 AbstractCegarLoop]: Abstraction has 2047 states and 2319 transitions. [2021-10-16 02:09:27,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2319 transitions. [2021-10-16 02:09:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-16 02:09:27,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:27,045 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:27,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:27,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:27,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1263294311, now seen corresponding path program 1 times [2021-10-16 02:09:27,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:27,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122425488] [2021-10-16 02:09:27,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:27,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:27,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:27,263 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:27,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:09:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:28,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:09:28,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:09:29,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:09:29,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:29,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122425488] [2021-10-16 02:09:29,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122425488] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:29,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:29,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:09:29,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516946572] [2021-10-16 02:09:29,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:09:29,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:29,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:09:29,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:09:29,988 INFO L87 Difference]: Start difference. First operand 2047 states and 2319 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:31,961 INFO L93 Difference]: Finished difference Result 5272 states and 6004 transitions. [2021-10-16 02:09:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:09:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 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 202 [2021-10-16 02:09:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:31,973 INFO L225 Difference]: With dead ends: 5272 [2021-10-16 02:09:31,973 INFO L226 Difference]: Without dead ends: 3227 [2021-10-16 02:09:31,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:09:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2021-10-16 02:09:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2187. [2021-10-16 02:09:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.126715462031107) internal successors, (2463), 2186 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2463 transitions. [2021-10-16 02:09:32,040 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2463 transitions. Word has length 202 [2021-10-16 02:09:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:32,041 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 2463 transitions. [2021-10-16 02:09:32,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2463 transitions. [2021-10-16 02:09:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-10-16 02:09:32,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:32,048 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:32,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:32,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:32,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:32,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1552857704, now seen corresponding path program 1 times [2021-10-16 02:09:32,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:32,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609235245] [2021-10-16 02:09:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:32,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:32,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:32,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:32,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:09:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:33,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:33,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:09:33,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:09:34,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:34,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609235245] [2021-10-16 02:09:34,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609235245] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:34,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:34,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:09:34,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085022677] [2021-10-16 02:09:34,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:34,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:34,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:34,145 INFO L87 Difference]: Start difference. First operand 2187 states and 2463 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:34,600 INFO L93 Difference]: Finished difference Result 4079 states and 4574 transitions. [2021-10-16 02:09:34,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:09:34,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 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 206 [2021-10-16 02:09:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:34,606 INFO L225 Difference]: With dead ends: 4079 [2021-10-16 02:09:34,606 INFO L226 Difference]: Without dead ends: 1471 [2021-10-16 02:09:34,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:34,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-10-16 02:09:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1471. [2021-10-16 02:09:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 1.0931972789115647) internal successors, (1607), 1470 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1607 transitions. [2021-10-16 02:09:34,643 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1607 transitions. Word has length 206 [2021-10-16 02:09:34,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:34,643 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 1607 transitions. [2021-10-16 02:09:34,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1607 transitions. [2021-10-16 02:09:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-10-16 02:09:34,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:34,649 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:09:34,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:34,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:34,866 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:34,867 INFO L82 PathProgramCache]: Analyzing trace with hash -264119497, now seen corresponding path program 1 times [2021-10-16 02:09:34,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:34,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745770632] [2021-10-16 02:09:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:34,868 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:34,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:34,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:09:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:35,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:09:35,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:09:36,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:09:36,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:36,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745770632] [2021-10-16 02:09:36,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745770632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:36,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:36,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:09:36,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79070223] [2021-10-16 02:09:36,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:09:36,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:09:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:36,858 INFO L87 Difference]: Start difference. First operand 1471 states and 1607 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:37,597 INFO L93 Difference]: Finished difference Result 3451 states and 3784 transitions. [2021-10-16 02:09:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:09:37,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 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 223 [2021-10-16 02:09:37,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:37,605 INFO L225 Difference]: With dead ends: 3451 [2021-10-16 02:09:37,605 INFO L226 Difference]: Without dead ends: 2034 [2021-10-16 02:09:37,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:09:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-10-16 02:09:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 2031. [2021-10-16 02:09:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2030 states have (on average 1.080295566502463) internal successors, (2193), 2030 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2193 transitions. [2021-10-16 02:09:37,655 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2193 transitions. Word has length 223 [2021-10-16 02:09:37,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:37,655 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 2193 transitions. [2021-10-16 02:09:37,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2193 transitions. [2021-10-16 02:09:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-10-16 02:09:37,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:09:37,663 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-10-16 02:09:37,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:37,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:37,874 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:09:37,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:09:37,874 INFO L82 PathProgramCache]: Analyzing trace with hash 995979598, now seen corresponding path program 1 times [2021-10-16 02:09:37,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:09:37,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629333804] [2021-10-16 02:09:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:09:37,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:09:37,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:09:37,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:09:37,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:09:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:09:39,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:09:39,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:09:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-16 02:09:39,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:09:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-16 02:09:40,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:09:40,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629333804] [2021-10-16 02:09:40,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629333804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:09:40,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:09:40,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:09:40,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110697679] [2021-10-16 02:09:40,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:09:40,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:09:40,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:09:40,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:09:40,172 INFO L87 Difference]: Start difference. First operand 2031 states and 2193 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:09:41,380 INFO L93 Difference]: Finished difference Result 4004 states and 4338 transitions. [2021-10-16 02:09:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:09:41,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 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 246 [2021-10-16 02:09:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:09:41,381 INFO L225 Difference]: With dead ends: 4004 [2021-10-16 02:09:41,382 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:09:41,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:09:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:09:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:09:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:09:41,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 246 [2021-10-16 02:09:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:09:41,386 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:09:41,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:09:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:09:41,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:09:41,389 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:09:41,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:09:41,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:09:41,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:09:41,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:09:41,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:09:41,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:09:43,198 INFO L857 garLoopResultBuilder]: For program point L565-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,199 INFO L857 garLoopResultBuilder]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,199 INFO L857 garLoopResultBuilder]: For program point L433-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,199 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-16 02:09:43,199 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-16 02:09:43,199 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-16 02:09:43,199 INFO L857 garLoopResultBuilder]: For program point L566(line 566) no Hoare annotation was computed. [2021-10-16 02:09:43,199 INFO L857 garLoopResultBuilder]: For program point L500(line 500) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L434(line 434) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L436-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L569(line 569) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L503(line 503) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L437(line 437) no Hoare annotation was computed. [2021-10-16 02:09:43,200 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L439-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L572(line 572) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L506(line 506) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L440(line 440) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 317) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L308-2(lines 308 317) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,201 INFO L857 garLoopResultBuilder]: For program point L508-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L442-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L575(line 575) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L509(line 509) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L443(line 443) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L511-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L445-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L578(line 578) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L512(line 512) no Hoare annotation was computed. [2021-10-16 02:09:43,202 INFO L857 garLoopResultBuilder]: For program point L446(line 446) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 256) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L248-2(lines 248 256) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L580-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L514-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L581(line 581) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L515(line 515) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L449(line 449) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L583-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,203 INFO L857 garLoopResultBuilder]: For program point L517-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,204 INFO L857 garLoopResultBuilder]: For program point L451-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,205 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-16 02:09:43,205 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-16 02:09:43,205 INFO L857 garLoopResultBuilder]: For program point L584(line 584) no Hoare annotation was computed. [2021-10-16 02:09:43,205 INFO L857 garLoopResultBuilder]: For program point L518(line 518) no Hoare annotation was computed. [2021-10-16 02:09:43,206 INFO L857 garLoopResultBuilder]: For program point L452(line 452) no Hoare annotation was computed. [2021-10-16 02:09:43,206 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-16 02:09:43,206 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-16 02:09:43,208 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-16 02:09:43,208 INFO L857 garLoopResultBuilder]: For program point L586-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,208 INFO L857 garLoopResultBuilder]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,208 INFO L857 garLoopResultBuilder]: For program point L454-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,208 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L587(line 587) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L521(line 521) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L455(line 455) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L391(lines 391 397) no Hoare annotation was computed. [2021-10-16 02:09:43,209 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 336) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L391-2(lines 391 397) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L325-2(lines 325 336) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L590(line 590) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L524(line 524) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L458(line 458) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L526-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,210 INFO L857 garLoopResultBuilder]: For program point L460-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,211 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-16 02:09:43,211 INFO L857 garLoopResultBuilder]: For program point L593(line 593) no Hoare annotation was computed. [2021-10-16 02:09:43,211 INFO L857 garLoopResultBuilder]: For program point L527(line 527) no Hoare annotation was computed. [2021-10-16 02:09:43,211 INFO L857 garLoopResultBuilder]: For program point L461(line 461) no Hoare annotation was computed. [2021-10-16 02:09:43,216 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-16 02:09:43,216 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-16 02:09:43,216 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 515) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L595-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L529-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L463-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L596(line 596) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L530(line 530) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L464(line 464) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L598-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L532-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,217 INFO L857 garLoopResultBuilder]: For program point L466-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,218 INFO L857 garLoopResultBuilder]: For program point L599(line 599) no Hoare annotation was computed. [2021-10-16 02:09:43,218 INFO L857 garLoopResultBuilder]: For program point L533(line 533) no Hoare annotation was computed. [2021-10-16 02:09:43,218 INFO L857 garLoopResultBuilder]: For program point L467(line 467) no Hoare annotation was computed. [2021-10-16 02:09:43,218 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-16 02:09:43,218 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L601-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L535-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L602(line 602) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L536(line 536) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L470(line 470) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L272(lines 272 284) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L272-2(lines 272 284) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-16 02:09:43,224 INFO L857 garLoopResultBuilder]: For program point L604-1(lines 604 606) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L538-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L605(line 605) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L539(line 539) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L473(line 473) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L342(lines 342 345) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L342-2(lines 342 345) no Hoare annotation was computed. [2021-10-16 02:09:43,225 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) ~a25~0)) (.cse1 (= (_ bv1 32) ~a19~0))) (let ((.cse12 (not .cse1)) (.cse11 (= (_ bv7 32) ~a28~0)) (.cse5 (= (_ bv8 32) ~a17~0)) (.cse4 (= (_ bv1 32) ~a21~0)) (.cse7 (not .cse0))) (let ((.cse3 (= ULTIMATE.start_calculate_output_~input (_ bv3 32))) (.cse2 (= (_ bv0 32) ~a11~0)) (.cse6 (not (= (_ bv11 32) ~a28~0))) (.cse13 (not (= (_ bv8 32) ~a28~0))) (.cse14 (or .cse7 (not (= ~a28~0 (_ bv9 32))))) (.cse9 (= (_ bv1 32) ~a11~0)) (.cse10 (or .cse12 (not .cse11) (not .cse5) (not .cse4)))) (or (and .cse0 .cse1 .cse2 (not .cse3) .cse4 .cse5) (and .cse1 .cse2 .cse6 .cse5) (and .cse2 .cse7 .cse6 .cse5) (and (or .cse2 (and (let ((.cse8 (not .cse9))) (or (and .cse8 .cse3) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv1 32))) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv5 32))) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv4 32))) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv6 32))))) .cse10)) .cse11 .cse1 (= (_ bv0 32) ~a25~0)) (and .cse9 .cse12) (and .cse2 .cse13 .cse14 .cse6 .cse5) (and .cse9 (not (= ~a17~0 (_ bv9 32))) (or .cse0 .cse13) .cse14 .cse10) (and .cse9 .cse10 .cse5))))) [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L541-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L542(line 542) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L476(line 476) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 220) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L213-2(lines 213 220) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L544-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L478-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L545(line 545) no Hoare annotation was computed. [2021-10-16 02:09:43,226 INFO L857 garLoopResultBuilder]: For program point L479(line 479) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L348(lines 348 357) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L348-2(lines 348 357) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L547-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L481-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L85(lines 85 90) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L85-2(lines 85 90) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L548(line 548) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L482(line 482) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-16 02:09:43,227 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-16 02:09:43,228 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) ~a25~0)) (.cse1 (= (_ bv1 32) ~a19~0))) (let ((.cse12 (not .cse1)) (.cse11 (= (_ bv7 32) ~a28~0)) (.cse5 (= (_ bv8 32) ~a17~0)) (.cse4 (= (_ bv1 32) ~a21~0)) (.cse7 (not .cse0))) (let ((.cse3 (= ULTIMATE.start_calculate_output_~input (_ bv3 32))) (.cse2 (= (_ bv0 32) ~a11~0)) (.cse6 (not (= (_ bv11 32) ~a28~0))) (.cse13 (not (= (_ bv8 32) ~a28~0))) (.cse14 (or .cse7 (not (= ~a28~0 (_ bv9 32))))) (.cse9 (= (_ bv1 32) ~a11~0)) (.cse10 (or .cse12 (not .cse11) (not .cse5) (not .cse4)))) (or (and .cse0 .cse1 .cse2 (not .cse3) .cse4 .cse5) (and .cse1 .cse2 .cse6 .cse5) (and .cse2 .cse7 .cse6 .cse5) (and (or .cse2 (and (let ((.cse8 (not .cse9))) (or (and .cse8 .cse3) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv1 32))) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv5 32))) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv4 32))) (and .cse8 (= ULTIMATE.start_calculate_output_~input (_ bv6 32))))) .cse10)) .cse11 .cse1 (= (_ bv0 32) ~a25~0)) (and .cse9 .cse12) (and .cse2 .cse13 .cse14 .cse6 .cse5) (and .cse9 (not (= ~a17~0 (_ bv9 32))) (or .cse0 .cse13) .cse14 .cse10) (and .cse9 .cse10 .cse5))))) [2021-10-16 02:09:43,228 INFO L857 garLoopResultBuilder]: For program point L550-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,228 INFO L857 garLoopResultBuilder]: For program point L484-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,228 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-16 02:09:43,228 INFO L857 garLoopResultBuilder]: For program point L551(line 551) no Hoare annotation was computed. [2021-10-16 02:09:43,228 INFO L857 garLoopResultBuilder]: For program point L485(line 485) no Hoare annotation was computed. [2021-10-16 02:09:43,229 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-16 02:09:43,229 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-16 02:09:43,229 INFO L857 garLoopResultBuilder]: For program point L553-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,229 INFO L857 garLoopResultBuilder]: For program point L487-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,229 INFO L857 garLoopResultBuilder]: For program point L554(line 554) no Hoare annotation was computed. [2021-10-16 02:09:43,230 INFO L857 garLoopResultBuilder]: For program point L488(line 488) no Hoare annotation was computed. [2021-10-16 02:09:43,231 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-16 02:09:43,231 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-16 02:09:43,231 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-16 02:09:43,231 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-16 02:09:43,231 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-16 02:09:43,236 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:09:43,236 INFO L857 garLoopResultBuilder]: For program point L93-2(lines 93 99) no Hoare annotation was computed. [2021-10-16 02:09:43,236 INFO L857 garLoopResultBuilder]: For program point L556-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,237 INFO L857 garLoopResultBuilder]: For program point L490-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,237 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 426) no Hoare annotation was computed. [2021-10-16 02:09:43,237 INFO L857 garLoopResultBuilder]: For program point L424-2(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,237 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:09:43,237 INFO L857 garLoopResultBuilder]: For program point L557(line 557) no Hoare annotation was computed. [2021-10-16 02:09:43,237 INFO L857 garLoopResultBuilder]: For program point L491(line 491) no Hoare annotation was computed. [2021-10-16 02:09:43,237 INFO L857 garLoopResultBuilder]: For program point L425(line 425) no Hoare annotation was computed. [2021-10-16 02:09:43,238 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-16 02:09:43,238 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-16 02:09:43,238 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-16 02:09:43,238 INFO L857 garLoopResultBuilder]: For program point L559-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,238 INFO L857 garLoopResultBuilder]: For program point L493-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,238 INFO L857 garLoopResultBuilder]: For program point L427-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,238 INFO L857 garLoopResultBuilder]: For program point L560(line 560) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L494(line 494) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L428(line 428) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L562-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L430-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:09:43,239 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-16 02:09:43,240 INFO L857 garLoopResultBuilder]: For program point L563(line 563) no Hoare annotation was computed. [2021-10-16 02:09:43,240 INFO L857 garLoopResultBuilder]: For program point L497(line 497) no Hoare annotation was computed. [2021-10-16 02:09:43,240 INFO L857 garLoopResultBuilder]: For program point L431(line 431) no Hoare annotation was computed. [2021-10-16 02:09:43,240 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-16 02:09:43,240 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-16 02:09:43,245 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:09:43,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:09:43 BoogieIcfgContainer [2021-10-16 02:09:43,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:09:43,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:09:43,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:09:43,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:09:43,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:09:00" (3/4) ... [2021-10-16 02:09:43,269 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:09:43,291 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:09:43,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:09:43,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:09:43,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:09:43,407 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:09:43,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:09:43,409 INFO L168 Benchmark]: Toolchain (without parser) took 45033.70 ms. Allocated memory was 71.3 MB in the beginning and 264.2 MB in the end (delta: 192.9 MB). Free memory was 54.1 MB in the beginning and 98.4 MB in the end (delta: -44.3 MB). Peak memory consumption was 148.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:43,409 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:09:43,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.27 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 43.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:43,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.00 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 38.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:43,410 INFO L168 Benchmark]: Boogie Preprocessor took 104.29 ms. Allocated memory is still 71.3 MB. Free memory was 38.1 MB in the beginning and 33.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:43,411 INFO L168 Benchmark]: RCFGBuilder took 1479.44 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 33.6 MB in the beginning and 59.7 MB in the end (delta: -26.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:43,411 INFO L168 Benchmark]: TraceAbstraction took 42436.27 ms. Allocated memory was 109.1 MB in the beginning and 264.2 MB in the end (delta: 155.2 MB). Free memory was 59.2 MB in the beginning and 113.1 MB in the end (delta: -53.9 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:43,412 INFO L168 Benchmark]: Witness Printer took 142.29 ms. Allocated memory is still 264.2 MB. Free memory was 113.1 MB in the beginning and 98.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:09:43,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 71.3 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 761.27 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 43.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.00 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 38.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.29 ms. Allocated memory is still 71.3 MB. Free memory was 38.1 MB in the beginning and 33.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1479.44 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 33.6 MB in the beginning and 59.7 MB in the end (delta: -26.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 42436.27 ms. Allocated memory was 109.1 MB in the beginning and 264.2 MB in the end (delta: 155.2 MB). Free memory was 59.2 MB in the beginning and 113.1 MB in the end (delta: -53.9 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.1 GB. * Witness Printer took 142.29 ms. Allocated memory is still 264.2 MB. Free memory was 113.1 MB in the beginning and 98.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 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: 515]: 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, 227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42336.8ms, OverallIterations: 10, TraceHistogramMax: 4, EmptinessCheckTime: 103.9ms, AutomataDifference: 10944.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1576.0ms, InitialAbstractionConstructionTime: 18.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 839 SDtfs, 4710 SDslu, 346 SDs, 0 SdLazy, 7336 SolverSat, 1609 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8136.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3490 GetRequests, 3448 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 854.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2187occurred in iteration=7, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 427.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1339 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 443 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5025 FormulaSimplificationTreeSizeReduction, 420.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 3750 FormulaSimplificationTreeSizeReductionInter, 1147.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 162.1ms SsaConstructionTime, 684.9ms SatisfiabilityAnalysisTime, 19186.3ms InterpolantComputationTime, 1749 NumberOfCodeBlocks, 1749 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3478 ConstructedInterpolants, 0 QuantifiedInterpolants, 14025 SizeOfPredicates, 19 NumberOfNonLiveVariables, 2446 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 1994/1994 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: 616]: Loop Invariant Derived loop invariant: (((((((((((1bv32 == a25 && 1bv32 == a19) && 0bv32 == a11) && !(input == 3bv32)) && 1bv32 == a21) && 8bv32 == a17) || (((1bv32 == a19 && 0bv32 == a11) && !(11bv32 == a28)) && 8bv32 == a17)) || (((0bv32 == a11 && !(1bv32 == a25)) && !(11bv32 == a28)) && 8bv32 == a17)) || ((((0bv32 == a11 || ((((((!(1bv32 == a11) && input == 3bv32) || (!(1bv32 == a11) && input == 1bv32)) || (!(1bv32 == a11) && input == 5bv32)) || (!(1bv32 == a11) && input == 4bv32)) || (!(1bv32 == a11) && input == 6bv32)) && (((!(1bv32 == a19) || !(7bv32 == a28)) || !(8bv32 == a17)) || !(1bv32 == a21)))) && 7bv32 == a28) && 1bv32 == a19) && 0bv32 == a25)) || (1bv32 == a11 && !(1bv32 == a19))) || ((((0bv32 == a11 && !(8bv32 == a28)) && (!(1bv32 == a25) || !(a28 == 9bv32))) && !(11bv32 == a28)) && 8bv32 == a17)) || ((((1bv32 == a11 && !(a17 == 9bv32)) && (1bv32 == a25 || !(8bv32 == a28))) && (!(1bv32 == a25) || !(a28 == 9bv32))) && (((!(1bv32 == a19) || !(7bv32 == a28)) || !(8bv32 == a17)) || !(1bv32 == a21)))) || ((1bv32 == a11 && (((!(1bv32 == a19) || !(7bv32 == a28)) || !(8bv32 == a17)) || !(1bv32 == a21))) && 8bv32 == a17) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((1bv32 == a25 && 1bv32 == a19) && 0bv32 == a11) && !(input == 3bv32)) && 1bv32 == a21) && 8bv32 == a17) || (((1bv32 == a19 && 0bv32 == a11) && !(11bv32 == a28)) && 8bv32 == a17)) || (((0bv32 == a11 && !(1bv32 == a25)) && !(11bv32 == a28)) && 8bv32 == a17)) || ((((0bv32 == a11 || ((((((!(1bv32 == a11) && input == 3bv32) || (!(1bv32 == a11) && input == 1bv32)) || (!(1bv32 == a11) && input == 5bv32)) || (!(1bv32 == a11) && input == 4bv32)) || (!(1bv32 == a11) && input == 6bv32)) && (((!(1bv32 == a19) || !(7bv32 == a28)) || !(8bv32 == a17)) || !(1bv32 == a21)))) && 7bv32 == a28) && 1bv32 == a19) && 0bv32 == a25)) || (1bv32 == a11 && !(1bv32 == a19))) || ((((0bv32 == a11 && !(8bv32 == a28)) && (!(1bv32 == a25) || !(a28 == 9bv32))) && !(11bv32 == a28)) && 8bv32 == a17)) || ((((1bv32 == a11 && !(a17 == 9bv32)) && (1bv32 == a25 || !(8bv32 == a28))) && (!(1bv32 == a25) || !(a28 == 9bv32))) && (((!(1bv32 == a19) || !(7bv32 == a28)) || !(8bv32 == a17)) || !(1bv32 == a21)))) || ((1bv32 == a11 && (((!(1bv32 == a19) || !(7bv32 == a28)) || !(8bv32 == a17)) || !(1bv32 == a21))) && 8bv32 == a17) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:09:43,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49fd082a-e6b6-4477-985d-1ffd8f8ca3d7/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...