./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P --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 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:04:21,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:04:21,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:04:21,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:04:21,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:04:21,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:04:21,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:04:21,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:04:21,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:04:21,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:04:21,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:04:21,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:04:21,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:04:21,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:04:21,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:04:21,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:04:21,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:04:21,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:04:21,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:04:21,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:04:21,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:04:21,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:04:21,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:04:21,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:04:21,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:04:21,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:04:21,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:04:21,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:04:21,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:04:21,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:04:21,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:04:21,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:04:21,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:04:21,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:04:21,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:04:21,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:04:21,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:04:21,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:04:21,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:04:21,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:04:21,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:04:21,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:04:21,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:04:21,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:04:21,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:04:21,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:04:21,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:04:21,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:04:21,496 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:04:21,496 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:04:21,496 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:04:21,496 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:04:21,496 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:04:21,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:04:21,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:04:21,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:04:21,497 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:04:21,497 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:04:21,497 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:04:21,497 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:04:21,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:04:21,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:04:21,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:04:21,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:04:21,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:04:21,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:04:21,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:04:21,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:04:21,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:04:21,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:04:21,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:04:21,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:04:21,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:04:21,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:04:21,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:04:21,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:04:21,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:04:21,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:04:21,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:04:21,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:04:21,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:04:21,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:04:21,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:04:21,502 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_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f [2021-11-21 00:04:21,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:04:21,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:04:21,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:04:21,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:04:21,802 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:04:21,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-11-21 00:04:21,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/data/56220d909/c7ba1b97c3d24472b63ef4275bab0996/FLAG982d2834d [2021-11-21 00:04:22,486 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:04:22,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-11-21 00:04:22,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/data/56220d909/c7ba1b97c3d24472b63ef4275bab0996/FLAG982d2834d [2021-11-21 00:04:22,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/data/56220d909/c7ba1b97c3d24472b63ef4275bab0996 [2021-11-21 00:04:22,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:04:22,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:04:22,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:04:22,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:04:22,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:04:22,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:22" (1/1) ... [2021-11-21 00:04:22,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d0ddc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:22, skipping insertion in model container [2021-11-21 00:04:22,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:22" (1/1) ... [2021-11-21 00:04:22,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:04:22,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:04:23,139 WARN L230 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_e164b187-db8d-41a6-81e5-e5c0650065c3/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-11-21 00:04:23,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:04:23,154 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:04:23,238 WARN L230 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_e164b187-db8d-41a6-81e5-e5c0650065c3/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-11-21 00:04:23,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:04:23,259 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:04:23,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23 WrapperNode [2021-11-21 00:04:23,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:04:23,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:04:23,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:04:23,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:04:23,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,329 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 535 [2021-11-21 00:04:23,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:04:23,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:04:23,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:04:23,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:04:23,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:04:23,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:04:23,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:04:23,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:04:23,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (1/1) ... [2021-11-21 00:04:23,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:04:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:04:23,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:04:23,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:04:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2021-11-21 00:04:23,507 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2021-11-21 00:04:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:04:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2021-11-21 00:04:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2021-11-21 00:04:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-21 00:04:23,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-21 00:04:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2021-11-21 00:04:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2021-11-21 00:04:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:04:23,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:04:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:04:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2021-11-21 00:04:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2021-11-21 00:04:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:04:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:04:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2021-11-21 00:04:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2021-11-21 00:04:23,650 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:04:23,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:04:24,331 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:04:24,573 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:04:24,574 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:04:24,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:04:24 BoogieIcfgContainer [2021-11-21 00:04:24,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:04:24,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:04:24,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:04:24,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:04:24,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:04:22" (1/3) ... [2021-11-21 00:04:24,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0f4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:04:24, skipping insertion in model container [2021-11-21 00:04:24,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:23" (2/3) ... [2021-11-21 00:04:24,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0f4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:04:24, skipping insertion in model container [2021-11-21 00:04:24,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:04:24" (3/3) ... [2021-11-21 00:04:24,588 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-11-21 00:04:24,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:04:24,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:04:24,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:04:24,653 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, mAutomataTypeConcurrency=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 [2021-11-21 00:04:24,653 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:04:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 111 states have internal predecessors, (168), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-21 00:04:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:04:24,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:24,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:24,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1402390635, now seen corresponding path program 1 times [2021-11-21 00:04:24,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:24,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705446120] [2021-11-21 00:04:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:24,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:25,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:25,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705446120] [2021-11-21 00:04:25,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705446120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:25,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:25,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:04:25,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337925444] [2021-11-21 00:04:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:25,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:25,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:25,193 INFO L87 Difference]: Start difference. First operand has 149 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 111 states have internal predecessors, (168), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:04:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:25,403 INFO L93 Difference]: Finished difference Result 298 states and 487 transitions. [2021-11-21 00:04:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:25,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-21 00:04:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:25,426 INFO L225 Difference]: With dead ends: 298 [2021-11-21 00:04:25,426 INFO L226 Difference]: Without dead ends: 152 [2021-11-21 00:04:25,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:25,435 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 5 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:25,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 623 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-21 00:04:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-21 00:04:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.5089285714285714) internal successors, (169), 113 states have internal predecessors, (169), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-21 00:04:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2021-11-21 00:04:25,493 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 19 [2021-11-21 00:04:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:25,494 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2021-11-21 00:04:25,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:04:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2021-11-21 00:04:25,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:04:25,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:25,497 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:04:25,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:04:25,498 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 698242933, now seen corresponding path program 1 times [2021-11-21 00:04:25,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:25,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981488392] [2021-11-21 00:04:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:25,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:04:25,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:25,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981488392] [2021-11-21 00:04:25,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981488392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:25,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:25,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:04:25,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760733769] [2021-11-21 00:04:25,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:25,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:04:25,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:04:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:25,659 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:04:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:26,018 INFO L93 Difference]: Finished difference Result 432 states and 672 transitions. [2021-11-21 00:04:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:04:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2021-11-21 00:04:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:26,027 INFO L225 Difference]: With dead ends: 432 [2021-11-21 00:04:26,028 INFO L226 Difference]: Without dead ends: 283 [2021-11-21 00:04:26,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:04:26,036 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 566 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:26,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 593 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:04:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-21 00:04:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 186. [2021-11-21 00:04:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.5106382978723405) internal successors, (213), 141 states have internal predecessors, (213), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:04:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 281 transitions. [2021-11-21 00:04:26,095 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 281 transitions. Word has length 30 [2021-11-21 00:04:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:26,098 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 281 transitions. [2021-11-21 00:04:26,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:04:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 281 transitions. [2021-11-21 00:04:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 00:04:26,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:26,100 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:26,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:04:26,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1421239568, now seen corresponding path program 1 times [2021-11-21 00:04:26,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:26,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611207465] [2021-11-21 00:04:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:26,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:04:26,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:26,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611207465] [2021-11-21 00:04:26,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611207465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:26,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:26,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:04:26,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752601094] [2021-11-21 00:04:26,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:26,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:04:26,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:04:26,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:26,190 INFO L87 Difference]: Start difference. First operand 186 states and 281 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:04:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:26,529 INFO L93 Difference]: Finished difference Result 432 states and 670 transitions. [2021-11-21 00:04:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:04:26,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2021-11-21 00:04:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:26,534 INFO L225 Difference]: With dead ends: 432 [2021-11-21 00:04:26,534 INFO L226 Difference]: Without dead ends: 283 [2021-11-21 00:04:26,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:04:26,542 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 562 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:26,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 596 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:04:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-21 00:04:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 186. [2021-11-21 00:04:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.50354609929078) internal successors, (212), 141 states have internal predecessors, (212), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:04:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 280 transitions. [2021-11-21 00:04:26,593 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 280 transitions. Word has length 31 [2021-11-21 00:04:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:26,594 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 280 transitions. [2021-11-21 00:04:26,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:04:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 280 transitions. [2021-11-21 00:04:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 00:04:26,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:26,599 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:26,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:04:26,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1401044311, now seen corresponding path program 1 times [2021-11-21 00:04:26,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:26,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76913485] [2021-11-21 00:04:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:26,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:04:26,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:26,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76913485] [2021-11-21 00:04:26,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76913485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:26,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:26,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:04:26,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128119494] [2021-11-21 00:04:26,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:26,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:26,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:26,740 INFO L87 Difference]: Start difference. First operand 186 states and 280 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:04:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:26,827 INFO L93 Difference]: Finished difference Result 340 states and 514 transitions. [2021-11-21 00:04:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:26,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-11-21 00:04:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:26,830 INFO L225 Difference]: With dead ends: 340 [2021-11-21 00:04:26,830 INFO L226 Difference]: Without dead ends: 191 [2021-11-21 00:04:26,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:26,832 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 6 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:26,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 635 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-21 00:04:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-11-21 00:04:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 145 states have (on average 1.4896551724137932) internal successors, (216), 145 states have internal predecessors, (216), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:04:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 284 transitions. [2021-11-21 00:04:26,852 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 284 transitions. Word has length 33 [2021-11-21 00:04:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:26,853 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 284 transitions. [2021-11-21 00:04:26,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:04:26,853 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 284 transitions. [2021-11-21 00:04:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-21 00:04:26,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:26,855 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:26,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:04:26,856 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:26,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1975676803, now seen corresponding path program 1 times [2021-11-21 00:04:26,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:26,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450699505] [2021-11-21 00:04:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:26,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:04:26,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:26,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450699505] [2021-11-21 00:04:26,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450699505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:26,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:26,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:04:26,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689238726] [2021-11-21 00:04:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:26,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:26,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:26,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:26,988 INFO L87 Difference]: Start difference. First operand 191 states and 284 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:04:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:27,083 INFO L93 Difference]: Finished difference Result 350 states and 525 transitions. [2021-11-21 00:04:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:27,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-11-21 00:04:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:27,088 INFO L225 Difference]: With dead ends: 350 [2021-11-21 00:04:27,090 INFO L226 Difference]: Without dead ends: 196 [2021-11-21 00:04:27,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:27,092 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 6 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:27,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 621 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-21 00:04:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-11-21 00:04:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 149 states have (on average 1.476510067114094) internal successors, (220), 149 states have internal predecessors, (220), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:04:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2021-11-21 00:04:27,132 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 41 [2021-11-21 00:04:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:27,134 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2021-11-21 00:04:27,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:04:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2021-11-21 00:04:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-21 00:04:27,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:27,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:27,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:04:27,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -819289017, now seen corresponding path program 1 times [2021-11-21 00:04:27,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:27,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471308091] [2021-11-21 00:04:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:27,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:04:27,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:27,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471308091] [2021-11-21 00:04:27,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471308091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:27,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:27,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:04:27,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835580365] [2021-11-21 00:04:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:27,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:27,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:27,233 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-21 00:04:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:27,330 INFO L93 Difference]: Finished difference Result 359 states and 529 transitions. [2021-11-21 00:04:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:27,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2021-11-21 00:04:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:27,335 INFO L225 Difference]: With dead ends: 359 [2021-11-21 00:04:27,335 INFO L226 Difference]: Without dead ends: 200 [2021-11-21 00:04:27,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:27,339 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 5 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:27,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 630 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-21 00:04:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-21 00:04:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 152 states have (on average 1.4671052631578947) internal successors, (223), 152 states have internal predecessors, (223), 34 states have call successors, (34), 13 states have call predecessors, (34), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:04:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 291 transitions. [2021-11-21 00:04:27,364 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 291 transitions. Word has length 49 [2021-11-21 00:04:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:27,365 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 291 transitions. [2021-11-21 00:04:27,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-21 00:04:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 291 transitions. [2021-11-21 00:04:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-21 00:04:27,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:27,369 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:04:27,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:04:27,370 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:27,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1577170286, now seen corresponding path program 1 times [2021-11-21 00:04:27,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:27,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195634309] [2021-11-21 00:04:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:27,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:04:27,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:27,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195634309] [2021-11-21 00:04:27,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195634309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:27,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:27,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:04:27,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555733438] [2021-11-21 00:04:27,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:27,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:27,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:27,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:27,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:27,549 INFO L87 Difference]: Start difference. First operand 200 states and 291 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-21 00:04:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:27,635 INFO L93 Difference]: Finished difference Result 368 states and 539 transitions. [2021-11-21 00:04:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:27,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2021-11-21 00:04:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:27,638 INFO L225 Difference]: With dead ends: 368 [2021-11-21 00:04:27,638 INFO L226 Difference]: Without dead ends: 205 [2021-11-21 00:04:27,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:27,640 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 6 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:27,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 621 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-21 00:04:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-21 00:04:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 156 states have (on average 1.455128205128205) internal successors, (227), 156 states have internal predecessors, (227), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:04:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 295 transitions. [2021-11-21 00:04:27,668 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 295 transitions. Word has length 49 [2021-11-21 00:04:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:27,671 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 295 transitions. [2021-11-21 00:04:27,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-21 00:04:27,671 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 295 transitions. [2021-11-21 00:04:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 00:04:27,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:27,675 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:04:27,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:04:27,676 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash 46065614, now seen corresponding path program 1 times [2021-11-21 00:04:27,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:27,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240967532] [2021-11-21 00:04:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:27,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-21 00:04:27,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:27,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240967532] [2021-11-21 00:04:27,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240967532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:27,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:27,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:04:27,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519132528] [2021-11-21 00:04:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:27,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:27,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:27,815 INFO L87 Difference]: Start difference. First operand 205 states and 295 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:04:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:27,883 INFO L93 Difference]: Finished difference Result 379 states and 546 transitions. [2021-11-21 00:04:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2021-11-21 00:04:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:27,886 INFO L225 Difference]: With dead ends: 379 [2021-11-21 00:04:27,886 INFO L226 Difference]: Without dead ends: 211 [2021-11-21 00:04:27,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:27,888 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 7 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:27,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 632 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:04:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-21 00:04:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-11-21 00:04:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 161 states have (on average 1.4409937888198758) internal successors, (232), 161 states have internal predecessors, (232), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:04:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 300 transitions. [2021-11-21 00:04:27,903 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 300 transitions. Word has length 57 [2021-11-21 00:04:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:27,904 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 300 transitions. [2021-11-21 00:04:27,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:04:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 300 transitions. [2021-11-21 00:04:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 00:04:27,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:27,905 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:04:27,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:04:27,906 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash 202306747, now seen corresponding path program 1 times [2021-11-21 00:04:27,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:27,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606546204] [2021-11-21 00:04:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:27,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:04:28,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:28,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606546204] [2021-11-21 00:04:28,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606546204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:04:28,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767000933] [2021-11-21 00:04:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:28,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:28,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:04:28,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:04:28,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:04:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:28,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 00:04:28,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:04:28,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:04:28,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767000933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:28,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:04:28,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2021-11-21 00:04:28,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677006784] [2021-11-21 00:04:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:28,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:04:28,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:04:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:04:28,746 INFO L87 Difference]: Start difference. First operand 211 states and 300 transitions. Second operand has 8 states, 6 states have (on average 7.5) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-21 00:04:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:29,005 INFO L93 Difference]: Finished difference Result 598 states and 836 transitions. [2021-11-21 00:04:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:04:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.5) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 60 [2021-11-21 00:04:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:29,010 INFO L225 Difference]: With dead ends: 598 [2021-11-21 00:04:29,010 INFO L226 Difference]: Without dead ends: 398 [2021-11-21 00:04:29,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:04:29,013 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 222 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:29,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 1144 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:04:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-21 00:04:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 395. [2021-11-21 00:04:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 299 states have (on average 1.4214046822742474) internal successors, (425), 300 states have internal predecessors, (425), 65 states have call successors, (65), 30 states have call predecessors, (65), 30 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-21 00:04:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 555 transitions. [2021-11-21 00:04:29,043 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 555 transitions. Word has length 60 [2021-11-21 00:04:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:29,044 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 555 transitions. [2021-11-21 00:04:29,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.5) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-21 00:04:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 555 transitions. [2021-11-21 00:04:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:04:29,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:29,046 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:04:29,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:29,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:29,274 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:04:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1935039856, now seen corresponding path program 1 times [2021-11-21 00:04:29,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:29,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497458225] [2021-11-21 00:04:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:29,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:04:29,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:29,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497458225] [2021-11-21 00:04:29,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497458225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:04:29,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122076903] [2021-11-21 00:04:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:29,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:04:29,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:04:29,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:04:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:29,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:04:29,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:30,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:04:30,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122076903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:04:30,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370290261] [2021-11-21 00:04:30,422 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2021-11-21 00:04:30,422 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:04:30,427 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:04:30,432 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:04:30,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:04:51,908 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 154 for LOIs [2021-11-21 00:04:53,264 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 98 for LOIs [2021-11-21 00:04:53,522 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 92 for LOIs [2021-11-21 00:04:54,488 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:05:01,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1370290261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:01,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:05:01,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [9, 9, 9] total 37 [2021-11-21 00:05:01,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489635864] [2021-11-21 00:05:01,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:01,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-21 00:05:01,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:05:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-21 00:05:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:05:01,968 INFO L87 Difference]: Start difference. First operand 395 states and 555 transitions. Second operand has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-21 00:05:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:11,577 INFO L93 Difference]: Finished difference Result 819 states and 1158 transitions. [2021-11-21 00:05:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 00:05:11,577 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 62 [2021-11-21 00:05:11,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:11,581 INFO L225 Difference]: With dead ends: 819 [2021-11-21 00:05:11,581 INFO L226 Difference]: Without dead ends: 464 [2021-11-21 00:05:11,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 155 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 00:05:11,584 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 133 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:11,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 3615 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 00:05:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-11-21 00:05:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 441. [2021-11-21 00:05:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 330 states have (on average 1.4) internal successors, (462), 331 states have internal predecessors, (462), 78 states have call successors, (78), 32 states have call predecessors, (78), 32 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-21 00:05:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 618 transitions. [2021-11-21 00:05:11,643 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 618 transitions. Word has length 62 [2021-11-21 00:05:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:11,644 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 618 transitions. [2021-11-21 00:05:11,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-21 00:05:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 618 transitions. [2021-11-21 00:05:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:05:11,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:11,646 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:05:11,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:11,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:05:11,862 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:05:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1493661489, now seen corresponding path program 1 times [2021-11-21 00:05:11,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:05:11,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90604941] [2021-11-21 00:05:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:11,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:05:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:05:12,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:05:12,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90604941] [2021-11-21 00:05:12,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90604941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:05:12,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698199411] [2021-11-21 00:05:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:12,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:05:12,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:05:12,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:05:12,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:05:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:12,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:05:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:12,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:05:12,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698199411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:05:12,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2142942943] [2021-11-21 00:05:12,784 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2021-11-21 00:05:12,784 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:05:12,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:05:12,792 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:05:12,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:05:36,111 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 153 for LOIs [2021-11-21 00:05:37,553 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 122 for LOIs [2021-11-21 00:05:37,932 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 112 for LOIs [2021-11-21 00:05:39,149 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:05:49,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2142942943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:49,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:05:49,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [9, 9, 9] total 37 [2021-11-21 00:05:49,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811512488] [2021-11-21 00:05:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:49,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-21 00:05:49,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:05:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-21 00:05:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:05:49,252 INFO L87 Difference]: Start difference. First operand 441 states and 618 transitions. Second operand has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-21 00:05:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:57,149 INFO L93 Difference]: Finished difference Result 888 states and 1254 transitions. [2021-11-21 00:05:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 00:05:57,150 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 62 [2021-11-21 00:05:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:57,154 INFO L225 Difference]: With dead ends: 888 [2021-11-21 00:05:57,154 INFO L226 Difference]: Without dead ends: 522 [2021-11-21 00:05:57,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 155 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:05:57,157 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 155 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:57,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 3656 Invalid, 2318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 00:05:57,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-11-21 00:05:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 499. [2021-11-21 00:05:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 371 states have (on average 1.371967654986523) internal successors, (509), 372 states have internal predecessors, (509), 92 states have call successors, (92), 35 states have call predecessors, (92), 35 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-21 00:05:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 693 transitions. [2021-11-21 00:05:57,226 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 693 transitions. Word has length 62 [2021-11-21 00:05:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:57,227 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 693 transitions. [2021-11-21 00:05:57,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 18 states have internal predecessors, (43), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-21 00:05:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 693 transitions. [2021-11-21 00:05:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:05:57,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:57,229 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:57,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:57,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:05:57,442 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:05:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash -97829756, now seen corresponding path program 1 times [2021-11-21 00:05:57,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:05:57,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282055297] [2021-11-21 00:05:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:57,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:05:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:05:57,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:05:57,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282055297] [2021-11-21 00:05:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282055297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:05:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983398605] [2021-11-21 00:05:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:57,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:05:57,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:05:57,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:05:57,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:05:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:57,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:05:57,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:58,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:05:58,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983398605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:05:58,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1406692149] [2021-11-21 00:05:58,381 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2021-11-21 00:05:58,382 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:05:58,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:05:58,383 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:05:58,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:06:19,067 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 149 for LOIs [2021-11-21 00:06:20,345 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 98 for LOIs [2021-11-21 00:06:20,545 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 91 for LOIs [2021-11-21 00:06:21,474 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:06:29,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1406692149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:29,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:06:29,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [9, 9, 9] total 39 [2021-11-21 00:06:29,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848629808] [2021-11-21 00:06:29,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:29,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-21 00:06:29,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:29,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-21 00:06:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 00:06:29,567 INFO L87 Difference]: Start difference. First operand 499 states and 693 transitions. Second operand has 28 states, 24 states have (on average 1.875) internal successors, (45), 20 states have internal predecessors, (45), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-21 00:06:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:39,247 INFO L93 Difference]: Finished difference Result 923 states and 1299 transitions. [2021-11-21 00:06:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 00:06:39,248 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.875) internal successors, (45), 20 states have internal predecessors, (45), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2021-11-21 00:06:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:39,252 INFO L225 Difference]: With dead ends: 923 [2021-11-21 00:06:39,252 INFO L226 Difference]: Without dead ends: 568 [2021-11-21 00:06:39,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 159 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2021-11-21 00:06:39,256 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 207 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:39,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 4214 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 00:06:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-21 00:06:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 519. [2021-11-21 00:06:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 385 states have (on average 1.3532467532467531) internal successors, (521), 386 states have internal predecessors, (521), 97 states have call successors, (97), 36 states have call predecessors, (97), 36 states have return successors, (97), 96 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-21 00:06:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 715 transitions. [2021-11-21 00:06:39,334 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 715 transitions. Word has length 64 [2021-11-21 00:06:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:39,334 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 715 transitions. [2021-11-21 00:06:39,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.875) internal successors, (45), 20 states have internal predecessors, (45), 5 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-21 00:06:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 715 transitions. [2021-11-21 00:06:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 00:06:39,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:39,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:39,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:39,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 00:06:39,546 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:06:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash 372001254, now seen corresponding path program 1 times [2021-11-21 00:06:39,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:39,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168799081] [2021-11-21 00:06:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:39,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:06:39,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:39,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168799081] [2021-11-21 00:06:39,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168799081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:39,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:39,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:06:39,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208855512] [2021-11-21 00:06:39,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:39,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:06:39,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:39,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:06:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:06:39,623 INFO L87 Difference]: Start difference. First operand 519 states and 715 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-21 00:06:39,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:39,743 INFO L93 Difference]: Finished difference Result 930 states and 1308 transitions. [2021-11-21 00:06:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:06:39,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-11-21 00:06:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:39,748 INFO L225 Difference]: With dead ends: 930 [2021-11-21 00:06:39,748 INFO L226 Difference]: Without dead ends: 527 [2021-11-21 00:06:39,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:06:39,751 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 5 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:39,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 630 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:06:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-11-21 00:06:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2021-11-21 00:06:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 391 states have (on average 1.3478260869565217) internal successors, (527), 392 states have internal predecessors, (527), 97 states have call successors, (97), 38 states have call predecessors, (97), 38 states have return successors, (97), 96 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-21 00:06:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 721 transitions. [2021-11-21 00:06:39,829 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 721 transitions. Word has length 66 [2021-11-21 00:06:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:39,829 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 721 transitions. [2021-11-21 00:06:39,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-21 00:06:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 721 transitions. [2021-11-21 00:06:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-21 00:06:39,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:39,836 INFO L514 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] [2021-11-21 00:06:39,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:06:39,836 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:06:39,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash 742316448, now seen corresponding path program 1 times [2021-11-21 00:06:39,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:39,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37988046] [2021-11-21 00:06:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:39,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:06:40,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:40,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37988046] [2021-11-21 00:06:40,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37988046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:06:40,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596421817] [2021-11-21 00:06:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:40,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:06:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:06:40,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:06:40,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:06:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:40,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:06:40,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:40,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:06:40,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596421817] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:06:40,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1527598408] [2021-11-21 00:06:40,754 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-21 00:06:40,754 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:06:40,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:06:40,755 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:06:40,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:07:34,904 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 74 for LOIs [2021-11-21 00:07:35,299 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 98 for LOIs [2021-11-21 00:07:35,527 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 93 for LOIs [2021-11-21 00:07:36,370 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 99 for LOIs [2021-11-21 00:07:37,443 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 96 for LOIs [2021-11-21 00:07:39,232 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 112 for LOIs [2021-11-21 00:07:40,472 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:08:03,705 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:08:03,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:08:03,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2021-11-21 00:08:03,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571684230] [2021-11-21 00:08:03,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:08:03,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:08:03,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:08:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-11-21 00:08:03,708 INFO L87 Difference]: Start difference. First operand 527 states and 721 transitions. Second operand has 13 states, 9 states have (on average 8.333333333333334) internal successors, (75), 12 states have internal predecessors, (75), 4 states have call successors, (17), 3 states have call predecessors, (17), 8 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-21 00:08:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:04,223 INFO L93 Difference]: Finished difference Result 1268 states and 1770 transitions. [2021-11-21 00:08:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:08:04,223 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 8.333333333333334) internal successors, (75), 12 states have internal predecessors, (75), 4 states have call successors, (17), 3 states have call predecessors, (17), 8 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 70 [2021-11-21 00:08:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:04,230 INFO L225 Difference]: With dead ends: 1268 [2021-11-21 00:08:04,230 INFO L226 Difference]: Without dead ends: 873 [2021-11-21 00:08:04,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 160 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=317, Invalid=3343, Unknown=0, NotChecked=0, Total=3660 [2021-11-21 00:08:04,234 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 304 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:04,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2491 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:08:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-21 00:08:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 549. [2021-11-21 00:08:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 406 states have (on average 1.3103448275862069) internal successors, (532), 409 states have internal predecessors, (532), 95 states have call successors, (95), 47 states have call predecessors, (95), 47 states have return successors, (95), 92 states have call predecessors, (95), 95 states have call successors, (95) [2021-11-21 00:08:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 722 transitions. [2021-11-21 00:08:04,319 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 722 transitions. Word has length 70 [2021-11-21 00:08:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:04,319 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 722 transitions. [2021-11-21 00:08:04,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 8.333333333333334) internal successors, (75), 12 states have internal predecessors, (75), 4 states have call successors, (17), 3 states have call predecessors, (17), 8 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-21 00:08:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 722 transitions. [2021-11-21 00:08:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-21 00:08:04,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:04,321 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:08:04,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:08:04,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:08:04,546 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:08:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash -992035311, now seen corresponding path program 1 times [2021-11-21 00:08:04,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:04,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082111843] [2021-11-21 00:08:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:04,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:08:04,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:04,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082111843] [2021-11-21 00:08:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082111843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:04,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:04,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 00:08:04,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494806612] [2021-11-21 00:08:04,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:04,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:08:04,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:04,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:08:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:08:04,726 INFO L87 Difference]: Start difference. First operand 549 states and 722 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 00:08:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:05,537 INFO L93 Difference]: Finished difference Result 1207 states and 1671 transitions. [2021-11-21 00:08:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:08:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 71 [2021-11-21 00:08:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:05,545 INFO L225 Difference]: With dead ends: 1207 [2021-11-21 00:08:05,545 INFO L226 Difference]: Without dead ends: 896 [2021-11-21 00:08:05,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:08:05,551 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 576 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:05,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 1865 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:08:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-11-21 00:08:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 683. [2021-11-21 00:08:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 503 states have (on average 1.312127236580517) internal successors, (660), 506 states have internal predecessors, (660), 119 states have call successors, (119), 60 states have call predecessors, (119), 60 states have return successors, (119), 116 states have call predecessors, (119), 119 states have call successors, (119) [2021-11-21 00:08:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 898 transitions. [2021-11-21 00:08:05,675 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 898 transitions. Word has length 71 [2021-11-21 00:08:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:05,676 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 898 transitions. [2021-11-21 00:08:05,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-21 00:08:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 898 transitions. [2021-11-21 00:08:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:08:05,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:05,679 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:05,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:08:05,679 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:08:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2033385991, now seen corresponding path program 1 times [2021-11-21 00:08:05,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147245304] [2021-11-21 00:08:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:05,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:08:05,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:05,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147245304] [2021-11-21 00:08:05,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147245304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:05,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:05,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 00:08:05,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000787333] [2021-11-21 00:08:05,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:05,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:08:05,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:05,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:08:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:08:05,809 INFO L87 Difference]: Start difference. First operand 683 states and 898 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 00:08:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:06,718 INFO L93 Difference]: Finished difference Result 1582 states and 2191 transitions. [2021-11-21 00:08:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:08:06,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2021-11-21 00:08:06,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:06,728 INFO L225 Difference]: With dead ends: 1582 [2021-11-21 00:08:06,729 INFO L226 Difference]: Without dead ends: 1241 [2021-11-21 00:08:06,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:08:06,731 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 603 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:06,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2266 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:08:06,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-11-21 00:08:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 950. [2021-11-21 00:08:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 695 states have (on average 1.3237410071942446) internal successors, (920), 700 states have internal predecessors, (920), 169 states have call successors, (169), 85 states have call predecessors, (169), 85 states have return successors, (169), 164 states have call predecessors, (169), 169 states have call successors, (169) [2021-11-21 00:08:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1258 transitions. [2021-11-21 00:08:06,908 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1258 transitions. Word has length 73 [2021-11-21 00:08:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:06,909 INFO L470 AbstractCegarLoop]: Abstraction has 950 states and 1258 transitions. [2021-11-21 00:08:06,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 00:08:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1258 transitions. [2021-11-21 00:08:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 00:08:06,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:06,914 INFO L514 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] [2021-11-21 00:08:06,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:08:06,914 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:08:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1582274702, now seen corresponding path program 1 times [2021-11-21 00:08:06,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:06,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779483841] [2021-11-21 00:08:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:06,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:08:07,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:07,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779483841] [2021-11-21 00:08:07,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779483841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:08:07,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472133396] [2021-11-21 00:08:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:07,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:08:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:08:07,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:08:07,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:08:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:07,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:08:07,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:08:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:08:07,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:08:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-21 00:08:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472133396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:08:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479297935] [2021-11-21 00:08:07,694 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-21 00:08:07,694 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:08:07,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:08:07,695 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:08:07,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:08:50,500 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 154 for LOIs [2021-11-21 00:08:51,827 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 98 for LOIs [2021-11-21 00:08:52,052 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 120 for LOIs [2021-11-21 00:08:53,780 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 112 for LOIs [2021-11-21 00:08:55,154 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:09:16,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [479297935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:16,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:09:16,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [8, 9, 9] total 49 [2021-11-21 00:09:16,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702700945] [2021-11-21 00:09:16,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:16,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-21 00:09:16,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:16,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-21 00:09:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2100, Unknown=0, NotChecked=0, Total=2352 [2021-11-21 00:09:16,513 INFO L87 Difference]: Start difference. First operand 950 states and 1258 transitions. Second operand has 38 states, 32 states have (on average 1.5) internal successors, (48), 26 states have internal predecessors, (48), 8 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-21 00:09:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:24,904 INFO L93 Difference]: Finished difference Result 1535 states and 2055 transitions. [2021-11-21 00:09:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-21 00:09:24,905 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 1.5) internal successors, (48), 26 states have internal predecessors, (48), 8 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 77 [2021-11-21 00:09:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:24,911 INFO L225 Difference]: With dead ends: 1535 [2021-11-21 00:09:24,911 INFO L226 Difference]: Without dead ends: 936 [2021-11-21 00:09:24,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 185 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=285, Invalid=2471, Unknown=0, NotChecked=0, Total=2756 [2021-11-21 00:09:24,915 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 101 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:24,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 2489 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 00:09:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-11-21 00:09:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2021-11-21 00:09:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 685 states have (on average 1.3226277372262774) internal successors, (906), 690 states have internal predecessors, (906), 166 states have call successors, (166), 84 states have call predecessors, (166), 84 states have return successors, (166), 161 states have call predecessors, (166), 166 states have call successors, (166) [2021-11-21 00:09:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1238 transitions. [2021-11-21 00:09:25,082 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1238 transitions. Word has length 77 [2021-11-21 00:09:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:25,083 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 1238 transitions. [2021-11-21 00:09:25,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 1.5) internal successors, (48), 26 states have internal predecessors, (48), 8 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-21 00:09:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1238 transitions. [2021-11-21 00:09:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-21 00:09:25,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:25,085 INFO L514 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] [2021-11-21 00:09:25,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:09:25,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 00:09:25,294 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:09:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1422642637, now seen corresponding path program 1 times [2021-11-21 00:09:25,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:25,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090829790] [2021-11-21 00:09:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:25,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 00:09:25,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:25,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090829790] [2021-11-21 00:09:25,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090829790] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:09:25,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415812448] [2021-11-21 00:09:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:25,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:09:25,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:09:25,469 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:09:25,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:09:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:25,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 00:09:25,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:09:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:09:25,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:09:25,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415812448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:25,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:09:25,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-21 00:09:25,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413117328] [2021-11-21 00:09:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:25,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:09:25,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:09:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-21 00:09:25,827 INFO L87 Difference]: Start difference. First operand 936 states and 1238 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-21 00:09:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:26,568 INFO L93 Difference]: Finished difference Result 1832 states and 2500 transitions. [2021-11-21 00:09:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:09:26,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2021-11-21 00:09:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:26,577 INFO L225 Difference]: With dead ends: 1832 [2021-11-21 00:09:26,577 INFO L226 Difference]: Without dead ends: 1116 [2021-11-21 00:09:26,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-21 00:09:26,581 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 514 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:26,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1730 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:09:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-11-21 00:09:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 936. [2021-11-21 00:09:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 685 states have (on average 1.3167883211678832) internal successors, (902), 690 states have internal predecessors, (902), 166 states have call successors, (166), 84 states have call predecessors, (166), 84 states have return successors, (166), 161 states have call predecessors, (166), 166 states have call successors, (166) [2021-11-21 00:09:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1234 transitions. [2021-11-21 00:09:26,753 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1234 transitions. Word has length 77 [2021-11-21 00:09:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:26,754 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 1234 transitions. [2021-11-21 00:09:26,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-21 00:09:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1234 transitions. [2021-11-21 00:09:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 00:09:26,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:26,757 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:26,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:09:26,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 00:09:26,982 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:09:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash -815524496, now seen corresponding path program 1 times [2021-11-21 00:09:26,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:26,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122719979] [2021-11-21 00:09:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:26,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 00:09:27,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122719979] [2021-11-21 00:09:27,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122719979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:27,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:27,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:09:27,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350232724] [2021-11-21 00:09:27,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:27,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:09:27,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:09:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:09:27,074 INFO L87 Difference]: Start difference. First operand 936 states and 1234 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-21 00:09:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:27,381 INFO L93 Difference]: Finished difference Result 1241 states and 1714 transitions. [2021-11-21 00:09:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:09:27,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 80 [2021-11-21 00:09:27,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:27,391 INFO L225 Difference]: With dead ends: 1241 [2021-11-21 00:09:27,391 INFO L226 Difference]: Without dead ends: 1239 [2021-11-21 00:09:27,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:09:27,393 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:27,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1512 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:09:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-21 00:09:27,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 944. [2021-11-21 00:09:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 689 states have (on average 1.3149492017416546) internal successors, (906), 696 states have internal predecessors, (906), 168 states have call successors, (168), 86 states have call predecessors, (168), 86 states have return successors, (168), 161 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-21 00:09:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1242 transitions. [2021-11-21 00:09:27,551 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1242 transitions. Word has length 80 [2021-11-21 00:09:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:27,551 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1242 transitions. [2021-11-21 00:09:27,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-21 00:09:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1242 transitions. [2021-11-21 00:09:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-21 00:09:27,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:27,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 00:09:27,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:09:27,554 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:09:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1671605119, now seen corresponding path program 1 times [2021-11-21 00:09:27,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:27,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75683585] [2021-11-21 00:09:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:27,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-21 00:09:27,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:27,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75683585] [2021-11-21 00:09:27,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75683585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:27,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:27,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:09:27,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044446386] [2021-11-21 00:09:27,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:27,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:09:27,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:09:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:09:27,620 INFO L87 Difference]: Start difference. First operand 944 states and 1242 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-21 00:09:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:27,804 INFO L93 Difference]: Finished difference Result 1626 states and 2156 transitions. [2021-11-21 00:09:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:09:27,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 83 [2021-11-21 00:09:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:27,813 INFO L225 Difference]: With dead ends: 1626 [2021-11-21 00:09:27,813 INFO L226 Difference]: Without dead ends: 932 [2021-11-21 00:09:27,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:27,817 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 7 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:27,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 622 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:09:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-11-21 00:09:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2021-11-21 00:09:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 683 states have (on average 1.2913616398243046) internal successors, (882), 690 states have internal predecessors, (882), 162 states have call successors, (162), 86 states have call predecessors, (162), 86 states have return successors, (162), 155 states have call predecessors, (162), 162 states have call successors, (162) [2021-11-21 00:09:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1206 transitions. [2021-11-21 00:09:27,994 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1206 transitions. Word has length 83 [2021-11-21 00:09:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:27,995 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1206 transitions. [2021-11-21 00:09:27,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-21 00:09:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1206 transitions. [2021-11-21 00:09:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-21 00:09:27,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:27,997 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:27,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 00:09:27,998 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:09:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash 687863736, now seen corresponding path program 1 times [2021-11-21 00:09:27,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:27,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110856129] [2021-11-21 00:09:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:27,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-21 00:09:28,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110856129] [2021-11-21 00:09:28,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110856129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:09:28,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112258809] [2021-11-21 00:09:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:28,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:09:28,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:09:28,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:09:28,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:09:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:28,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:09:28,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:09:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-21 00:09:28,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:09:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-21 00:09:29,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112258809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:09:29,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [266336882] [2021-11-21 00:09:29,190 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-11-21 00:09:29,190 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:09:29,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:09:29,191 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:09:29,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:10:40,601 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 82 for LOIs [2021-11-21 00:10:41,130 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 98 for LOIs [2021-11-21 00:10:41,378 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 120 for LOIs [2021-11-21 00:10:43,381 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 121 for LOIs [2021-11-21 00:10:44,611 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 117 for LOIs [2021-11-21 00:10:46,780 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 112 for LOIs [2021-11-21 00:10:48,220 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:11:25,390 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:11:25,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:11:25,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 20 [2021-11-21 00:11:25,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069964595] [2021-11-21 00:11:25,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:11:25,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 00:11:25,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 00:11:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4203, Unknown=0, NotChecked=0, Total=4692 [2021-11-21 00:11:25,395 INFO L87 Difference]: Start difference. First operand 932 states and 1206 transitions. Second operand has 20 states, 15 states have (on average 6.4) internal successors, (96), 18 states have internal predecessors, (96), 6 states have call successors, (26), 3 states have call predecessors, (26), 9 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-21 00:11:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:26,665 INFO L93 Difference]: Finished difference Result 2259 states and 3126 transitions. [2021-11-21 00:11:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 00:11:26,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 6.4) internal successors, (96), 18 states have internal predecessors, (96), 6 states have call successors, (26), 3 states have call predecessors, (26), 9 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) Word has length 85 [2021-11-21 00:11:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:26,677 INFO L225 Difference]: With dead ends: 2259 [2021-11-21 00:11:26,677 INFO L226 Difference]: Without dead ends: 1502 [2021-11-21 00:11:26,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 191 SyntacticMatches, 9 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=547, Invalid=5153, Unknown=0, NotChecked=0, Total=5700 [2021-11-21 00:11:26,683 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 678 mSDsluCounter, 5262 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 5371 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:26,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 5371 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 00:11:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-21 00:11:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 911. [2021-11-21 00:11:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 668 states have (on average 1.284431137724551) internal successors, (858), 675 states have internal predecessors, (858), 156 states have call successors, (156), 86 states have call predecessors, (156), 86 states have return successors, (156), 149 states have call predecessors, (156), 156 states have call successors, (156) [2021-11-21 00:11:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1170 transitions. [2021-11-21 00:11:26,875 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1170 transitions. Word has length 85 [2021-11-21 00:11:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:26,875 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1170 transitions. [2021-11-21 00:11:26,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 6.4) internal successors, (96), 18 states have internal predecessors, (96), 6 states have call successors, (26), 3 states have call predecessors, (26), 9 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2021-11-21 00:11:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1170 transitions. [2021-11-21 00:11:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-21 00:11:26,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:26,878 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:11:26,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:11:27,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-21 00:11:27,090 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1394103779, now seen corresponding path program 1 times [2021-11-21 00:11:27,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:27,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289906782] [2021-11-21 00:11:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:27,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:11:27,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:27,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289906782] [2021-11-21 00:11:27,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289906782] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:11:27,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404459249] [2021-11-21 00:11:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:27,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:27,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:27,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:11:27,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:11:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:27,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:11:27,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:11:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:11:27,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:11:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 00:11:27,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404459249] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:11:27,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2003632186] [2021-11-21 00:11:27,810 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2021-11-21 00:11:27,811 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:11:27,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:11:27,812 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:11:27,812 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:12:13,198 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 154 for LOIs [2021-11-21 00:12:14,783 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 122 for LOIs [2021-11-21 00:12:15,194 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 105 for LOIs [2021-11-21 00:12:16,728 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 123 for LOIs [2021-11-21 00:12:18,558 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 112 for LOIs [2021-11-21 00:12:20,372 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:12:50,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2003632186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:50,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:12:50,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [8, 9, 9] total 55 [2021-11-21 00:12:50,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453036008] [2021-11-21 00:12:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:50,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-21 00:12:50,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:12:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-21 00:12:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2654, Unknown=0, NotChecked=0, Total=2970 [2021-11-21 00:12:50,012 INFO L87 Difference]: Start difference. First operand 911 states and 1170 transitions. Second operand has 44 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 30 states have internal predecessors, (50), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-21 00:13:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:01,807 INFO L93 Difference]: Finished difference Result 1536 states and 2008 transitions. [2021-11-21 00:13:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-21 00:13:01,808 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 30 states have internal predecessors, (50), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 85 [2021-11-21 00:13:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:01,816 INFO L225 Difference]: With dead ends: 1536 [2021-11-21 00:13:01,816 INFO L226 Difference]: Without dead ends: 946 [2021-11-21 00:13:01,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 202 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=352, Invalid=3070, Unknown=0, NotChecked=0, Total=3422 [2021-11-21 00:13:01,820 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 300 mSDsluCounter, 4871 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 4235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:01,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 5126 Invalid, 4235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 4106 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 00:13:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-11-21 00:13:02,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 914. [2021-11-21 00:13:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 670 states have (on average 1.2835820895522387) internal successors, (860), 677 states have internal predecessors, (860), 157 states have call successors, (157), 86 states have call predecessors, (157), 86 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2021-11-21 00:13:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1174 transitions. [2021-11-21 00:13:02,013 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1174 transitions. Word has length 85 [2021-11-21 00:13:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:02,013 INFO L470 AbstractCegarLoop]: Abstraction has 914 states and 1174 transitions. [2021-11-21 00:13:02,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 30 states have internal predecessors, (50), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-21 00:13:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1174 transitions. [2021-11-21 00:13:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-21 00:13:02,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:02,016 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:13:02,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:13:02,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:02,230 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -878295410, now seen corresponding path program 1 times [2021-11-21 00:13:02,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:02,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150345043] [2021-11-21 00:13:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:02,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:13:02,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:13:02,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150345043] [2021-11-21 00:13:02,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150345043] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:13:02,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027495345] [2021-11-21 00:13:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:02,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:02,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:02,381 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:02,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:13:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:02,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:13:02,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:13:02,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:13:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 00:13:03,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027495345] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:13:03,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [577899612] [2021-11-21 00:13:03,028 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-21 00:13:03,028 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:13:03,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:13:03,029 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:13:03,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:13:59,248 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 150 for LOIs [2021-11-21 00:14:00,845 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 98 for LOIs [2021-11-21 00:14:01,107 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 118 for LOIs [2021-11-21 00:14:02,786 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 103 for LOIs [2021-11-21 00:14:04,603 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 111 for LOIs [2021-11-21 00:14:06,551 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:14:36,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [577899612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:14:36,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:14:36,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [8, 9, 9] total 57 [2021-11-21 00:14:36,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256798545] [2021-11-21 00:14:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:14:36,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-21 00:14:36,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:14:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-21 00:14:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2862, Unknown=0, NotChecked=0, Total=3192 [2021-11-21 00:14:36,886 INFO L87 Difference]: Start difference. First operand 914 states and 1174 transitions. Second operand has 46 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 32 states have internal predecessors, (52), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-21 00:14:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:14:48,831 INFO L93 Difference]: Finished difference Result 1539 states and 2012 transitions. [2021-11-21 00:14:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-21 00:14:48,831 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 32 states have internal predecessors, (52), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 87 [2021-11-21 00:14:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:14:48,838 INFO L225 Difference]: With dead ends: 1539 [2021-11-21 00:14:48,838 INFO L226 Difference]: Without dead ends: 949 [2021-11-21 00:14:48,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 207 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=363, Invalid=3297, Unknown=0, NotChecked=0, Total=3660 [2021-11-21 00:14:48,843 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 254 mSDsluCounter, 5281 mSDsCounter, 0 mSdLazyCounter, 4158 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 5574 SdHoareTripleChecker+Invalid, 4247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 4158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:14:48,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 5574 Invalid, 4247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 4158 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-21 00:14:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-11-21 00:14:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 917. [2021-11-21 00:14:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 672 states have (on average 1.2827380952380953) internal successors, (862), 679 states have internal predecessors, (862), 158 states have call successors, (158), 86 states have call predecessors, (158), 86 states have return successors, (158), 151 states have call predecessors, (158), 158 states have call successors, (158) [2021-11-21 00:14:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1178 transitions. [2021-11-21 00:14:49,069 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1178 transitions. Word has length 87 [2021-11-21 00:14:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:14:49,070 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1178 transitions. [2021-11-21 00:14:49,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 32 states have internal predecessors, (52), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-21 00:14:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1178 transitions. [2021-11-21 00:14:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-21 00:14:49,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:14:49,073 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-11-21 00:14:49,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:14:49,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:14:49,298 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:14:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:14:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1296504375, now seen corresponding path program 1 times [2021-11-21 00:14:49,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:14:49,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14200314] [2021-11-21 00:14:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:14:49,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:14:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:14:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-21 00:14:49,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:14:49,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14200314] [2021-11-21 00:14:49,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14200314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:14:49,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:14:49,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:14:49,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997029847] [2021-11-21 00:14:49,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:14:49,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:14:49,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:14:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:14:49,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:14:49,403 INFO L87 Difference]: Start difference. First operand 917 states and 1178 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-21 00:14:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:14:49,626 INFO L93 Difference]: Finished difference Result 1560 states and 2026 transitions. [2021-11-21 00:14:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:14:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 92 [2021-11-21 00:14:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:14:49,631 INFO L225 Difference]: With dead ends: 1560 [2021-11-21 00:14:49,631 INFO L226 Difference]: Without dead ends: 905 [2021-11-21 00:14:49,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:14:49,634 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:14:49,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 604 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:14:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-11-21 00:14:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 905. [2021-11-21 00:14:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 666 states have (on average 1.2582582582582582) internal successors, (838), 673 states have internal predecessors, (838), 152 states have call successors, (152), 86 states have call predecessors, (152), 86 states have return successors, (152), 145 states have call predecessors, (152), 152 states have call successors, (152) [2021-11-21 00:14:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1142 transitions. [2021-11-21 00:14:49,833 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1142 transitions. Word has length 92 [2021-11-21 00:14:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:14:49,834 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1142 transitions. [2021-11-21 00:14:49,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-21 00:14:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1142 transitions. [2021-11-21 00:14:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-21 00:14:49,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:14:49,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-21 00:14:49,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-21 00:14:49,837 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:14:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:14:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash 856287506, now seen corresponding path program 1 times [2021-11-21 00:14:49,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:14:49,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882633787] [2021-11-21 00:14:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:14:49,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:14:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:14:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-21 00:14:49,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:14:49,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882633787] [2021-11-21 00:14:49,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882633787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:14:49,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586469799] [2021-11-21 00:14:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:14:49,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:14:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:14:50,002 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:14:50,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164b187-db8d-41a6-81e5-e5c0650065c3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:14:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:14:50,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:14:50,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:14:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 00:14:50,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:14:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-21 00:14:50,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586469799] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:14:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1516529194] [2021-11-21 00:14:50,737 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-21 00:14:50,737 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:14:50,737 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:14:50,737 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:14:50,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:15:40,306 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 153 for LOIs [2021-11-21 00:15:41,585 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 122 for LOIs [2021-11-21 00:15:41,937 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 105 for LOIs [2021-11-21 00:15:43,852 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 108 for LOIs [2021-11-21 00:15:47,094 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 112 for LOIs [2021-11-21 00:15:48,448 INFO L180 IcfgInterpreter]: Interpretation finished