./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF --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 133ba40f5b51c272364c51a4e246bcd97a40cd88b0bcd4bd92df8f8d6bb23a52 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:40:34,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:40:34,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:40:34,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:40:34,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:40:34,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:40:34,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:40:34,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:40:34,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:40:34,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:40:34,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:40:34,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:40:34,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:40:34,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:40:34,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:40:34,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:40:34,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:40:34,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:40:34,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:40:34,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:40:34,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:40:34,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:40:34,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:40:34,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:40:34,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:40:34,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:40:34,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:40:34,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:40:34,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:40:34,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:40:34,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:40:34,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:40:34,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:40:34,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:40:34,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:40:34,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:40:34,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:40:34,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:40:34,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:40:34,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:40:34,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:40:34,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:40:34,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:40:34,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:40:34,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:40:34,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:40:34,791 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:40:34,791 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:40:34,792 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:40:34,792 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:40:34,792 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:40:34,792 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:40:34,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:40:34,793 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:40:34,793 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:40:34,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:40:34,794 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:40:34,794 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:40:34,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:40:34,795 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:40:34,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:40:34,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:40:34,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:40:34,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:40:34,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:40:34,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:40:34,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:40:34,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:40:34,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:40:34,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:40:34,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:40:34,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:40:34,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:40:34,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:34,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:40:34,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:40:34,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:40:34,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:40:34,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:40:34,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:40:34,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:40:34,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:40:34,801 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_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 133ba40f5b51c272364c51a4e246bcd97a40cd88b0bcd4bd92df8f8d6bb23a52 [2021-11-13 02:40:35,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:40:35,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:40:35,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:40:35,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:40:35,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:40:35,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2021-11-13 02:40:35,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/data/eaaf07b7c/6a4fb20b3b484187b415983a5016806b/FLAGe024e9ff8 [2021-11-13 02:40:35,792 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:40:35,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2021-11-13 02:40:35,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/data/eaaf07b7c/6a4fb20b3b484187b415983a5016806b/FLAGe024e9ff8 [2021-11-13 02:40:36,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/data/eaaf07b7c/6a4fb20b3b484187b415983a5016806b [2021-11-13 02:40:36,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:40:36,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:40:36,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:36,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:40:36,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:40:36,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d50db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36, skipping insertion in model container [2021-11-13 02:40:36,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:40:36,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:36,429 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2021-11-13 02:40:36,436 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2021-11-13 02:40:36,438 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2021-11-13 02:40:36,442 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2021-11-13 02:40:36,444 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2021-11-13 02:40:36,447 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2021-11-13 02:40:36,449 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2021-11-13 02:40:36,452 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2021-11-13 02:40:36,454 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2021-11-13 02:40:36,457 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2021-11-13 02:40:36,459 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2021-11-13 02:40:36,462 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2021-11-13 02:40:36,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2021-11-13 02:40:36,467 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2021-11-13 02:40:36,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2021-11-13 02:40:36,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2021-11-13 02:40:36,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2021-11-13 02:40:36,476 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2021-11-13 02:40:36,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:36,489 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:40:36,507 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2021-11-13 02:40:36,509 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2021-11-13 02:40:36,511 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2021-11-13 02:40:36,514 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2021-11-13 02:40:36,516 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2021-11-13 02:40:36,518 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2021-11-13 02:40:36,520 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2021-11-13 02:40:36,523 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2021-11-13 02:40:36,525 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2021-11-13 02:40:36,528 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2021-11-13 02:40:36,530 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2021-11-13 02:40:36,532 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2021-11-13 02:40:36,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2021-11-13 02:40:36,536 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2021-11-13 02:40:36,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2021-11-13 02:40:36,559 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2021-11-13 02:40:36,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2021-11-13 02:40:36,563 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2021-11-13 02:40:36,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:36,597 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:40:36,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36 WrapperNode [2021-11-13 02:40:36,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:36,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:36,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:40:36,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:40:36,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:36,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:40:36,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:40:36,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:40:36,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:40:36,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:40:36,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:40:36,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:40:36,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (1/1) ... [2021-11-13 02:40:36,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:36,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:36,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:40:36,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:40:36,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:40:36,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:40:36,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:40:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:40:37,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:40:37,220 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:40:37,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:40:37 BoogieIcfgContainer [2021-11-13 02:40:37,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:40:37,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:40:37,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:40:37,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:40:37,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:40:36" (1/3) ... [2021-11-13 02:40:37,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43305223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:40:37, skipping insertion in model container [2021-11-13 02:40:37,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:36" (2/3) ... [2021-11-13 02:40:37,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43305223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:40:37, skipping insertion in model container [2021-11-13 02:40:37,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:40:37" (3/3) ... [2021-11-13 02:40:37,232 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2021-11-13 02:40:37,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:40:37,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-13 02:40:37,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:40:37,326 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 [2021-11-13 02:40:37,327 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-13 02:40:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 72 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 02:40:37,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:37,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:37,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:37,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash -101219053, now seen corresponding path program 1 times [2021-11-13 02:40:37,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:37,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672960408] [2021-11-13 02:40:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:37,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:37,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:37,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672960408] [2021-11-13 02:40:37,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672960408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:37,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:37,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:40:37,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521397553] [2021-11-13 02:40:37,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:37,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:37,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:37,748 INFO L87 Difference]: Start difference. First operand has 73 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 72 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:37,918 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2021-11-13 02:40:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-13 02:40:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:37,934 INFO L225 Difference]: With dead ends: 118 [2021-11-13 02:40:37,934 INFO L226 Difference]: Without dead ends: 106 [2021-11-13 02:40:37,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:37,943 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 79 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:37,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 232 Invalid, 65 Unknown, 0 Unchecked, 6.57ms Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 111.38ms Time] [2021-11-13 02:40:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-13 02:40:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2021-11-13 02:40:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.411764705882353) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-11-13 02:40:37,992 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 7 [2021-11-13 02:40:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:37,993 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-11-13 02:40:37,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-11-13 02:40:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 02:40:37,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:37,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:37,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:40:37,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:37,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:37,997 INFO L85 PathProgramCache]: Analyzing trace with hash -104789997, now seen corresponding path program 1 times [2021-11-13 02:40:37,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:37,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304964272] [2021-11-13 02:40:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:38,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:38,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:38,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304964272] [2021-11-13 02:40:38,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304964272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:38,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:38,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:40:38,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476126161] [2021-11-13 02:40:38,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:38,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:38,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:38,132 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:38,229 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2021-11-13 02:40:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:38,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-13 02:40:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:38,234 INFO L225 Difference]: With dead ends: 106 [2021-11-13 02:40:38,235 INFO L226 Difference]: Without dead ends: 104 [2021-11-13 02:40:38,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:38,238 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 44 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:38,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 161 Invalid, 40 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 74.76ms Time] [2021-11-13 02:40:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-13 02:40:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2021-11-13 02:40:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.4) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-11-13 02:40:38,263 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 7 [2021-11-13 02:40:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:38,263 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-11-13 02:40:38,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-11-13 02:40:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:40:38,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:38,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:38,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:40:38,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash -345778017, now seen corresponding path program 1 times [2021-11-13 02:40:38,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:38,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191424934] [2021-11-13 02:40:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:38,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:38,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:38,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191424934] [2021-11-13 02:40:38,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191424934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:38,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:38,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:40:38,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746483506] [2021-11-13 02:40:38,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:38,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:38,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:38,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:38,367 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:38,467 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-11-13 02:40:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:38,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 02:40:38,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:38,469 INFO L225 Difference]: With dead ends: 68 [2021-11-13 02:40:38,469 INFO L226 Difference]: Without dead ends: 66 [2021-11-13 02:40:38,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:38,474 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:38,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 114 Invalid, 98 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 80.79ms Time] [2021-11-13 02:40:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-13 02:40:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-11-13 02:40:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-11-13 02:40:38,483 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 10 [2021-11-13 02:40:38,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:38,484 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-11-13 02:40:38,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-11-13 02:40:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 02:40:38,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:38,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:38,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:40:38,486 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 646297484, now seen corresponding path program 1 times [2021-11-13 02:40:38,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:38,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434384993] [2021-11-13 02:40:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:38,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:38,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:38,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434384993] [2021-11-13 02:40:38,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434384993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:38,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:38,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:40:38,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936641163] [2021-11-13 02:40:38,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:38,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:38,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:38,579 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:38,665 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-11-13 02:40:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 02:40:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:38,667 INFO L225 Difference]: With dead ends: 66 [2021-11-13 02:40:38,668 INFO L226 Difference]: Without dead ends: 64 [2021-11-13 02:40:38,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:38,670 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 59 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:38,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 108 Invalid, 98 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 69.29ms Time] [2021-11-13 02:40:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-13 02:40:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-11-13 02:40:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.375) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-11-13 02:40:38,704 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2021-11-13 02:40:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:38,704 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-11-13 02:40:38,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-11-13 02:40:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:40:38,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:38,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:38,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 02:40:38,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2129179748, now seen corresponding path program 1 times [2021-11-13 02:40:38,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:38,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054049392] [2021-11-13 02:40:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:38,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:38,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:38,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054049392] [2021-11-13 02:40:38,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054049392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:38,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:38,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:40:38,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886504245] [2021-11-13 02:40:38,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:38,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:38,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:38,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:38,810 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:38,872 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-11-13 02:40:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:38,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 02:40:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:38,874 INFO L225 Difference]: With dead ends: 64 [2021-11-13 02:40:38,874 INFO L226 Difference]: Without dead ends: 60 [2021-11-13 02:40:38,875 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 [2021-11-13 02:40:38,876 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.59ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:38,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 132 Invalid, 42 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 47.59ms Time] [2021-11-13 02:40:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-13 02:40:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-11-13 02:40:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-11-13 02:40:38,895 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 11 [2021-11-13 02:40:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:38,895 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-11-13 02:40:38,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-11-13 02:40:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:40:38,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:38,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:38,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:40:38,898 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2128691176, now seen corresponding path program 1 times [2021-11-13 02:40:38,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:38,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063062432] [2021-11-13 02:40:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:38,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:38,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:38,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063062432] [2021-11-13 02:40:38,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063062432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:38,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:38,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:40:38,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516030906] [2021-11-13 02:40:38,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:38,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:39,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:39,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:39,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:39,001 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:39,123 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-11-13 02:40:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 02:40:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:39,125 INFO L225 Difference]: With dead ends: 94 [2021-11-13 02:40:39,125 INFO L226 Difference]: Without dead ends: 92 [2021-11-13 02:40:39,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:39,130 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 87 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.99ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:39,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 139 Invalid, 122 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 95.99ms Time] [2021-11-13 02:40:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-13 02:40:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-11-13 02:40:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-11-13 02:40:39,155 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 11 [2021-11-13 02:40:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:39,156 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-11-13 02:40:39,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-11-13 02:40:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:40:39,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:39,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:39,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 02:40:39,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2128675288, now seen corresponding path program 1 times [2021-11-13 02:40:39,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:39,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324379605] [2021-11-13 02:40:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:39,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:39,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:39,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324379605] [2021-11-13 02:40:39,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324379605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:39,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:39,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:40:39,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141581356] [2021-11-13 02:40:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:39,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:39,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:39,252 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:39,366 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-11-13 02:40:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 02:40:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:39,368 INFO L225 Difference]: With dead ends: 99 [2021-11-13 02:40:39,368 INFO L226 Difference]: Without dead ends: 97 [2021-11-13 02:40:39,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:39,369 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 91 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.78ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:39,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 139 Invalid, 133 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 95.78ms Time] [2021-11-13 02:40:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-13 02:40:39,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2021-11-13 02:40:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-11-13 02:40:39,376 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2021-11-13 02:40:39,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:39,377 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-11-13 02:40:39,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-11-13 02:40:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 02:40:39,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:39,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:39,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 02:40:39,379 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1439610404, now seen corresponding path program 1 times [2021-11-13 02:40:39,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:39,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82573510] [2021-11-13 02:40:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:39,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:39,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:39,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82573510] [2021-11-13 02:40:39,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82573510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:39,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:39,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:40:39,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714017843] [2021-11-13 02:40:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:39,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:39,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:39,444 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:39,505 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-11-13 02:40:39,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:39,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-13 02:40:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:39,507 INFO L225 Difference]: With dead ends: 56 [2021-11-13 02:40:39,507 INFO L226 Difference]: Without dead ends: 52 [2021-11-13 02:40:39,507 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 [2021-11-13 02:40:39,508 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:39,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 114 Invalid, 39 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 35.76ms Time] [2021-11-13 02:40:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-13 02:40:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-11-13 02:40:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.35) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-13 02:40:39,522 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2021-11-13 02:40:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:39,523 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-13 02:40:39,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-13 02:40:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:40:39,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:39,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:39,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 02:40:39,525 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:39,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1564912810, now seen corresponding path program 1 times [2021-11-13 02:40:39,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:39,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727179813] [2021-11-13 02:40:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:39,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:39,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:39,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727179813] [2021-11-13 02:40:39,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727179813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:39,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:39,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:40:39,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177502523] [2021-11-13 02:40:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:39,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:39,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:39,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:39,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:39,705 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:39,833 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-11-13 02:40:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:40:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:40:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:39,835 INFO L225 Difference]: With dead ends: 117 [2021-11-13 02:40:39,835 INFO L226 Difference]: Without dead ends: 115 [2021-11-13 02:40:39,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:39,839 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 74 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.68ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:39,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 217 Invalid, 148 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 100.68ms Time] [2021-11-13 02:40:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-13 02:40:39,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 55. [2021-11-13 02:40:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-11-13 02:40:39,858 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2021-11-13 02:40:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:39,859 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-11-13 02:40:39,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-11-13 02:40:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:40:39,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:39,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:39,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 02:40:39,866 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:39,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1564420266, now seen corresponding path program 1 times [2021-11-13 02:40:39,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:39,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854748577] [2021-11-13 02:40:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:39,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:40,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:40,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854748577] [2021-11-13 02:40:40,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854748577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:40,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:40,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:40:40,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797243057] [2021-11-13 02:40:40,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:40,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:40,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:40,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:40,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:40,039 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:40,187 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2021-11-13 02:40:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:40:40,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:40:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:40,189 INFO L225 Difference]: With dead ends: 115 [2021-11-13 02:40:40,189 INFO L226 Difference]: Without dead ends: 113 [2021-11-13 02:40:40,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:40,191 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 80 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.40ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:40,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 236 Invalid, 166 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 121.40ms Time] [2021-11-13 02:40:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-13 02:40:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 57. [2021-11-13 02:40:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-11-13 02:40:40,200 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 12 [2021-11-13 02:40:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:40,200 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-11-13 02:40:40,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-11-13 02:40:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:40:40,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:40,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:40,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 02:40:40,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1661195103, now seen corresponding path program 1 times [2021-11-13 02:40:40,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:40,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318665686] [2021-11-13 02:40:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:40,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:40,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:40,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318665686] [2021-11-13 02:40:40,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318665686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:40,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:40,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:40:40,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870480131] [2021-11-13 02:40:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:40,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:40,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:40,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:40,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:40,272 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:40,353 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-11-13 02:40:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:40,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:40:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:40,355 INFO L225 Difference]: With dead ends: 75 [2021-11-13 02:40:40,355 INFO L226 Difference]: Without dead ends: 73 [2021-11-13 02:40:40,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:40,357 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 67 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:40,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 98 Invalid, 98 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 64.02ms Time] [2021-11-13 02:40:40,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-13 02:40:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2021-11-13 02:40:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-11-13 02:40:40,373 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2021-11-13 02:40:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:40,373 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-11-13 02:40:40,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-11-13 02:40:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 02:40:40,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:40,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:40,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 02:40:40,377 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:40,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1659471199, now seen corresponding path program 1 times [2021-11-13 02:40:40,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:40,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407428950] [2021-11-13 02:40:40,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:40,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:40,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:40,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407428950] [2021-11-13 02:40:40,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407428950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:40,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:40,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:40:40,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97927417] [2021-11-13 02:40:40,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:40,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:40,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:40,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:40,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:40,441 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:40,515 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-11-13 02:40:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:40,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-13 02:40:40,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:40,517 INFO L225 Difference]: With dead ends: 56 [2021-11-13 02:40:40,517 INFO L226 Difference]: Without dead ends: 54 [2021-11-13 02:40:40,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:40,518 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.82ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:40,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 72 Invalid, 86 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 57.82ms Time] [2021-11-13 02:40:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-13 02:40:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-11-13 02:40:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.288888888888889) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-11-13 02:40:40,524 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2021-11-13 02:40:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:40,524 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-11-13 02:40:40,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-11-13 02:40:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 02:40:40,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:40,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:40,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 02:40:40,526 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash 42563455, now seen corresponding path program 1 times [2021-11-13 02:40:40,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:40,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946212907] [2021-11-13 02:40:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:40,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:40,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:40,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946212907] [2021-11-13 02:40:40,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946212907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:40,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:40,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:40:40,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268502996] [2021-11-13 02:40:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:40,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:40,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:40,659 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:40,783 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-11-13 02:40:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:40:40,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 02:40:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:40,788 INFO L225 Difference]: With dead ends: 91 [2021-11-13 02:40:40,789 INFO L226 Difference]: Without dead ends: 89 [2021-11-13 02:40:40,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:40,790 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 55 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:40,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 158 Invalid, 133 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 98.23ms Time] [2021-11-13 02:40:40,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-13 02:40:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59. [2021-11-13 02:40:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-11-13 02:40:40,800 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2021-11-13 02:40:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:40,803 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-11-13 02:40:40,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-11-13 02:40:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 02:40:40,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:40,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:40,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 02:40:40,806 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash 44110600, now seen corresponding path program 1 times [2021-11-13 02:40:40,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:40,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299361575] [2021-11-13 02:40:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:40,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:40,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:40,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299361575] [2021-11-13 02:40:40,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299361575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:40,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:40,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:40:40,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293913225] [2021-11-13 02:40:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:40,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:40,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:40,861 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:40,939 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-11-13 02:40:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 02:40:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:40,941 INFO L225 Difference]: With dead ends: 79 [2021-11-13 02:40:40,941 INFO L226 Difference]: Without dead ends: 77 [2021-11-13 02:40:40,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:40,942 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 58 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:40,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 90 Invalid, 107 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 63.57ms Time] [2021-11-13 02:40:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-13 02:40:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2021-11-13 02:40:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.28) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-11-13 02:40:40,949 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2021-11-13 02:40:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:40,950 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-11-13 02:40:40,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-11-13 02:40:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 02:40:40,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:40,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:40,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 02:40:40,951 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:40,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash 96004535, now seen corresponding path program 1 times [2021-11-13 02:40:40,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:40,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321615915] [2021-11-13 02:40:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:40,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:41,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:41,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321615915] [2021-11-13 02:40:41,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321615915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:41,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:41,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:40:41,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8195675] [2021-11-13 02:40:41,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:41,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:41,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:41,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:41,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:41,086 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:41,171 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-11-13 02:40:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:40:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 02:40:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:41,172 INFO L225 Difference]: With dead ends: 69 [2021-11-13 02:40:41,172 INFO L226 Difference]: Without dead ends: 65 [2021-11-13 02:40:41,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:41,176 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.98ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:41,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 91 Invalid, 88 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 62.98ms Time] [2021-11-13 02:40:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-13 02:40:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2021-11-13 02:40:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-11-13 02:40:41,181 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2021-11-13 02:40:41,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:41,182 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-11-13 02:40:41,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,182 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-11-13 02:40:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 02:40:41,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:41,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:41,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 02:40:41,183 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:41,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1367432731, now seen corresponding path program 1 times [2021-11-13 02:40:41,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:41,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963548710] [2021-11-13 02:40:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:41,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:41,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:41,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963548710] [2021-11-13 02:40:41,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963548710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:41,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:41,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:40:41,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441522527] [2021-11-13 02:40:41,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:41,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:41,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:41,296 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:41,409 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2021-11-13 02:40:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:40:41,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-13 02:40:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:41,410 INFO L225 Difference]: With dead ends: 86 [2021-11-13 02:40:41,410 INFO L226 Difference]: Without dead ends: 84 [2021-11-13 02:40:41,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:41,412 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 44 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.12ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:41,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 174 Invalid, 140 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 92.12ms Time] [2021-11-13 02:40:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-13 02:40:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2021-11-13 02:40:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-11-13 02:40:41,418 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2021-11-13 02:40:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:41,419 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-11-13 02:40:41,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-11-13 02:40:41,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 02:40:41,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:41,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:41,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 02:40:41,420 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2046065374, now seen corresponding path program 1 times [2021-11-13 02:40:41,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:41,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200117830] [2021-11-13 02:40:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:41,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:41,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:41,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200117830] [2021-11-13 02:40:41,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200117830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:41,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:41,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:40:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366930423] [2021-11-13 02:40:41,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:41,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:41,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:41,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:41,454 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:41,485 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-11-13 02:40:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-13 02:40:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:41,500 INFO L225 Difference]: With dead ends: 61 [2021-11-13 02:40:41,500 INFO L226 Difference]: Without dead ends: 59 [2021-11-13 02:40:41,500 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 [2021-11-13 02:40:41,501 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.54ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:41,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 62 Invalid, 27 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 20.54ms Time] [2021-11-13 02:40:41,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-13 02:40:41,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-13 02:40:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-11-13 02:40:41,508 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2021-11-13 02:40:41,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:41,508 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-11-13 02:40:41,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-11-13 02:40:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 02:40:41,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:41,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:41,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 02:40:41,510 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash 996486959, now seen corresponding path program 1 times [2021-11-13 02:40:41,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:41,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332543897] [2021-11-13 02:40:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:41,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:41,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:41,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332543897] [2021-11-13 02:40:41,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332543897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:41,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:41,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:40:41,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952095591] [2021-11-13 02:40:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:41,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:41,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:41,544 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:41,585 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-11-13 02:40:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-13 02:40:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:41,586 INFO L225 Difference]: With dead ends: 59 [2021-11-13 02:40:41,586 INFO L226 Difference]: Without dead ends: 55 [2021-11-13 02:40:41,586 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 [2021-11-13 02:40:41,587 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.75ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:41,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 86 Invalid, 36 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 29.75ms Time] [2021-11-13 02:40:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-13 02:40:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-13 02:40:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.24) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-11-13 02:40:41,594 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 16 [2021-11-13 02:40:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:41,594 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-11-13 02:40:41,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-11-13 02:40:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 02:40:41,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:41,595 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:41,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 02:40:41,595 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 321012073, now seen corresponding path program 1 times [2021-11-13 02:40:41,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:41,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556758230] [2021-11-13 02:40:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:41,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:41,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:41,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556758230] [2021-11-13 02:40:41,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556758230] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:41,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470259260] [2021-11-13 02:40:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:41,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:41,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:41,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:40:41,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:40:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:41,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:40:41,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:42,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:40:42,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470259260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:42,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [827271060] [2021-11-13 02:40:42,375 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-13 02:40:42,375 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:40:42,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:40:42,389 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:40:42,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:40:42,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:40:42,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:40:42,448 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:40:42,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:40:42,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-13 02:40:42,477 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-13 02:40:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:40:42,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:40:42,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:40:42,503 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:40:42,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,515 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:40:42,560 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:40:42,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:40:42,569 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:40:42,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,582 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-13 02:40:42,588 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:40:42,589 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-11-13 02:40:42,604 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.9 percent of original size [2021-11-13 02:40:42,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-13 02:40:42,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-13 02:40:42,641 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.5 percent of original size [2021-11-13 02:40:42,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-13 02:40:42,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-13 02:40:42,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-11-13 02:40:42,709 INFO L180 QuantifierPusher]: treesize reduction 10, result has 95.9 percent of original size [2021-11-13 02:40:42,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-11-13 02:40:42,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-13 02:40:42,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-11-13 02:40:42,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:42,981 INFO L180 QuantifierPusher]: treesize reduction 62, result has 68.5 percent of original size [2021-11-13 02:40:42,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:40:42,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:43,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-13 02:40:43,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:43,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-13 02:40:43,033 INFO L180 QuantifierPusher]: treesize reduction 62, result has 68.5 percent of original size [2021-11-13 02:40:43,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-13 02:40:43,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:43,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:43,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-11-13 02:40:43,251 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:40:46,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:40:46,833 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:40:46,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2021-11-13 02:40:46,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326120631] [2021-11-13 02:40:46,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:40:46,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:40:46,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:40:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:40:46,838 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:47,114 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-11-13 02:40:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:40:47,115 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-13 02:40:47,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:47,116 INFO L225 Difference]: With dead ends: 120 [2021-11-13 02:40:47,116 INFO L226 Difference]: Without dead ends: 118 [2021-11-13 02:40:47,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2021-11-13 02:40:47,117 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 361 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.02ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:47,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 99 Invalid, 202 Unknown, 0 Unchecked, 3.02ms Time], IncrementalHoareTripleChecker [52 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 153.38ms Time] [2021-11-13 02:40:47,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-13 02:40:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 51. [2021-11-13 02:40:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-11-13 02:40:47,124 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-11-13 02:40:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:47,124 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-11-13 02:40:47,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-11-13 02:40:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 02:40:47,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:47,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:47,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:47,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:47,340 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash 321504617, now seen corresponding path program 1 times [2021-11-13 02:40:47,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:47,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229388780] [2021-11-13 02:40:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:47,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:47,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:47,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229388780] [2021-11-13 02:40:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229388780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:47,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513492848] [2021-11-13 02:40:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:47,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:40:47,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:47,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:40:47,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 02:40:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:47,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:40:47,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:47,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:40:47,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513492848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:47,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [297639075] [2021-11-13 02:40:47,792 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-13 02:40:47,792 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:40:47,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:40:47,793 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:40:47,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:40:47,803 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,804 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:40:47,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:40:47,806 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:40:47,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:40:47,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-13 02:40:47,818 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-13 02:40:47,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:40:47,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:40:47,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:40:47,835 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:40:47,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:47,841 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:47,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:40:47,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:40:47,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:40:47,882 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:40:47,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:47,887 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-13 02:40:47,891 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:40:47,891 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-11-13 02:40:47,895 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.9 percent of original size [2021-11-13 02:40:47,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-13 02:40:47,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-11-13 02:40:47,917 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.5 percent of original size [2021-11-13 02:40:47,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-13 02:40:47,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,942 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-11-13 02:40:47,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-13 02:40:47,965 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.4 percent of original size [2021-11-13 02:40:47,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-11-13 02:40:47,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-11-13 02:40:47,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:47,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 227 [2021-11-13 02:40:48,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,094 INFO L180 QuantifierPusher]: treesize reduction 74, result has 63.5 percent of original size [2021-11-13 02:40:48,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:40:48,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:48,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-13 02:40:48,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:48,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-13 02:40:48,146 INFO L180 QuantifierPusher]: treesize reduction 74, result has 63.5 percent of original size [2021-11-13 02:40:48,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-13 02:40:48,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:40:48,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:48,360 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:40:48,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:48,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-11-13 02:40:48,383 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:40:48,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:48,401 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:40:48,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:48,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-13 02:40:48,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-11-13 02:40:48,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-11-13 02:40:48,425 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:40:51,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:40:51,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:40:51,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2021-11-13 02:40:51,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628393241] [2021-11-13 02:40:51,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:40:51,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:40:51,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:40:51,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:40:51,401 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:51,723 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2021-11-13 02:40:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:40:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-13 02:40:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:51,725 INFO L225 Difference]: With dead ends: 99 [2021-11-13 02:40:51,725 INFO L226 Difference]: Without dead ends: 97 [2021-11-13 02:40:51,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2021-11-13 02:40:51,727 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 203 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.74ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:51,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 124 Invalid, 246 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [46 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 192.74ms Time] [2021-11-13 02:40:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-13 02:40:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 44. [2021-11-13 02:40:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-11-13 02:40:51,732 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2021-11-13 02:40:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:51,733 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-11-13 02:40:51,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-11-13 02:40:51,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 02:40:51,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:51,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:51,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:51,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-13 02:40:51,963 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:51,963 INFO L85 PathProgramCache]: Analyzing trace with hash 841443737, now seen corresponding path program 1 times [2021-11-13 02:40:51,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:51,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533230481] [2021-11-13 02:40:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:51,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:52,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:52,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533230481] [2021-11-13 02:40:52,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533230481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:52,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:52,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:40:52,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884826640] [2021-11-13 02:40:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:52,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:52,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:52,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:52,019 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:52,104 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2021-11-13 02:40:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:40:52,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-13 02:40:52,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:52,106 INFO L225 Difference]: With dead ends: 59 [2021-11-13 02:40:52,106 INFO L226 Difference]: Without dead ends: 57 [2021-11-13 02:40:52,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:40:52,107 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 92 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.85ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:52,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 34 Invalid, 74 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 52.85ms Time] [2021-11-13 02:40:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-13 02:40:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2021-11-13 02:40:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-11-13 02:40:52,115 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 17 [2021-11-13 02:40:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:52,115 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-11-13 02:40:52,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-11-13 02:40:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 02:40:52,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:52,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:52,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-13 02:40:52,117 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1969266840, now seen corresponding path program 1 times [2021-11-13 02:40:52,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:52,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375971695] [2021-11-13 02:40:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:52,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:52,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:52,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375971695] [2021-11-13 02:40:52,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375971695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:52,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:52,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:52,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394442768] [2021-11-13 02:40:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:52,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:40:52,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:40:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:52,199 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:52,271 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-11-13 02:40:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:40:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-13 02:40:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:52,272 INFO L225 Difference]: With dead ends: 51 [2021-11-13 02:40:52,273 INFO L226 Difference]: Without dead ends: 49 [2021-11-13 02:40:52,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:40:52,275 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 60 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.78ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.22ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:52,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 28 Invalid, 80 Unknown, 0 Unchecked, 0.78ms Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 53.22ms Time] [2021-11-13 02:40:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-13 02:40:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2021-11-13 02:40:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-11-13 02:40:52,280 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2021-11-13 02:40:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:52,281 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-11-13 02:40:52,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-11-13 02:40:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 02:40:52,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:52,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:52,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-13 02:40:52,283 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-13 02:40:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1915825760, now seen corresponding path program 1 times [2021-11-13 02:40:52,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:40:52,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194177755] [2021-11-13 02:40:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:52,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:40:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:52,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:40:52,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194177755] [2021-11-13 02:40:52,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194177755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:52,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:52,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:40:52,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397241762] [2021-11-13 02:40:52,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:52,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:40:52,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:40:52,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:40:52,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:52,355 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:52,412 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-11-13 02:40:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:52,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-13 02:40:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:52,413 INFO L225 Difference]: With dead ends: 34 [2021-11-13 02:40:52,413 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 02:40:52,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:52,415 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.78ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:52,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 18 Invalid, 72 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 46.78ms Time] [2021-11-13 02:40:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 02:40:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 02:40:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 02:40:52,417 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-11-13 02:40:52,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:52,417 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 02:40:52,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 02:40:52,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 02:40:52,420 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (17 of 18 remaining) [2021-11-13 02:40:52,421 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (16 of 18 remaining) [2021-11-13 02:40:52,421 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (15 of 18 remaining) [2021-11-13 02:40:52,421 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (14 of 18 remaining) [2021-11-13 02:40:52,422 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (13 of 18 remaining) [2021-11-13 02:40:52,422 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (12 of 18 remaining) [2021-11-13 02:40:52,422 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (11 of 18 remaining) [2021-11-13 02:40:52,422 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 18 remaining) [2021-11-13 02:40:52,423 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (9 of 18 remaining) [2021-11-13 02:40:52,423 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (8 of 18 remaining) [2021-11-13 02:40:52,423 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (7 of 18 remaining) [2021-11-13 02:40:52,423 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (6 of 18 remaining) [2021-11-13 02:40:52,424 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (5 of 18 remaining) [2021-11-13 02:40:52,424 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (4 of 18 remaining) [2021-11-13 02:40:52,424 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (3 of 18 remaining) [2021-11-13 02:40:52,424 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (2 of 18 remaining) [2021-11-13 02:40:52,425 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION (1 of 18 remaining) [2021-11-13 02:40:52,425 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION (0 of 18 remaining) [2021-11-13 02:40:52,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-13 02:40:52,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 02:42:36,784 WARN L227 SmtUtils]: Spent 1.74m on a formula simplification. DAG size of input: 93 DAG size of output: 92 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-13 02:42:42,940 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 85 DAG size of output: 39 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-13 02:43:07,822 WARN L227 SmtUtils]: Spent 22.99s on a formula simplification. DAG size of input: 73 DAG size of output: 68 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-13 02:43:08,538 INFO L858 garLoopResultBuilder]: For program point L126(line 126) no Hoare annotation was computed. [2021-11-13 02:43:08,539 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2021-11-13 02:43:08,539 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-11-13 02:43:08,539 INFO L858 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-11-13 02:43:08,544 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-11-13 02:43:08,544 INFO L858 garLoopResultBuilder]: For program point L366(line 366) no Hoare annotation was computed. [2021-11-13 02:43:08,544 INFO L858 garLoopResultBuilder]: For program point L333(line 333) no Hoare annotation was computed. [2021-11-13 02:43:08,544 INFO L858 garLoopResultBuilder]: For program point L234(lines 234 242) no Hoare annotation was computed. [2021-11-13 02:43:08,545 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 297) no Hoare annotation was computed. [2021-11-13 02:43:08,545 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 126) no Hoare annotation was computed. [2021-11-13 02:43:08,545 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 02:43:08,546 INFO L858 garLoopResultBuilder]: For program point L152(lines 152 160) no Hoare annotation was computed. [2021-11-13 02:43:08,546 INFO L858 garLoopResultBuilder]: For program point L309(line 309) no Hoare annotation was computed. [2021-11-13 02:43:08,546 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 401) no Hoare annotation was computed. [2021-11-13 02:43:08,547 INFO L858 garLoopResultBuilder]: For program point L276(lines 276 391) no Hoare annotation was computed. [2021-11-13 02:43:08,547 INFO L861 garLoopResultBuilder]: At program point L400(lines 15 402) the Hoare annotation is: true [2021-11-13 02:43:08,547 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-11-13 02:43:08,547 INFO L858 garLoopResultBuilder]: For program point L70(lines 70 94) no Hoare annotation was computed. [2021-11-13 02:43:08,548 INFO L854 garLoopResultBuilder]: At program point L384(lines 282 391) the Hoare annotation is: (and (let ((.cse1 (= |ULTIMATE.start_main_~main__t~0#1| 0))) (let ((.cse0 (let ((.cse2 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~13#1| 0)))) (or (and (<= 1 |ULTIMATE.start_main_~main__t~0#1|) .cse2) (and .cse2 .cse1))))) (or (and .cse0 .cse1) (and (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~18#1| 0)) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~19#1|) .cse0)))) (< |ULTIMATE.start_main_~main__t~0#1| |ULTIMATE.start_main_~main__tagbuf_len~0#1|)) [2021-11-13 02:43:08,548 INFO L854 garLoopResultBuilder]: At program point L351(lines 32 395) the Hoare annotation is: (let ((.cse5 (<= |ULTIMATE.start_main_~main__t~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~main__t~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~main__t~0#1|))) (let ((.cse3 (let ((.cse6 (or .cse0 (and .cse2 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~13#1| 0)) (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 0)))))) (or (and .cse5 .cse6) (and (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~19#1| 0)) .cse6)))) (.cse4 (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~17#1|)) (.cse1 (< |ULTIMATE.start_main_~main__t~0#1| |ULTIMATE.start_main_~main__tagbuf_len~0#1|))) (or (and .cse0 .cse1) (and (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~19#1|) .cse2 .cse3 .cse4 .cse1) (and .cse2 .cse3 .cse4 .cse5 .cse1)))) [2021-11-13 02:43:08,552 INFO L858 garLoopResultBuilder]: For program point L186(lines 186 196) no Hoare annotation was computed. [2021-11-13 02:43:08,553 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 278) no Hoare annotation was computed. [2021-11-13 02:43:08,553 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 385) no Hoare annotation was computed. [2021-11-13 02:43:08,553 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 352) no Hoare annotation was computed. [2021-11-13 02:43:08,557 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2021-11-13 02:43:08,557 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 203) no Hoare annotation was computed. [2021-11-13 02:43:08,558 INFO L858 garLoopResultBuilder]: For program point L236(line 236) no Hoare annotation was computed. [2021-11-13 02:43:08,558 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 333) no Hoare annotation was computed. [2021-11-13 02:43:08,558 INFO L854 garLoopResultBuilder]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~main__t~0#1|) (<= |ULTIMATE.start_main_~main__t~0#1| |ULTIMATE.start_main_~main__tagbuf_len~0#1|)) [2021-11-13 02:43:08,558 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2021-11-13 02:43:08,558 INFO L858 garLoopResultBuilder]: For program point L154(line 154) no Hoare annotation was computed. [2021-11-13 02:43:08,559 INFO L858 garLoopResultBuilder]: For program point L278(line 278) no Hoare annotation was computed. [2021-11-13 02:43:08,559 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 378) no Hoare annotation was computed. [2021-11-13 02:43:08,559 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 209) no Hoare annotation was computed. [2021-11-13 02:43:08,559 INFO L858 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2021-11-13 02:43:08,559 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 255) no Hoare annotation was computed. [2021-11-13 02:43:08,560 INFO L858 garLoopResultBuilder]: For program point L295(lines 295 317) no Hoare annotation was computed. [2021-11-13 02:43:08,560 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2021-11-13 02:43:08,560 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-11-13 02:43:08,560 INFO L858 garLoopResultBuilder]: For program point L378(line 378) no Hoare annotation was computed. [2021-11-13 02:43:08,561 INFO L858 garLoopResultBuilder]: For program point L345(line 345) no Hoare annotation was computed. [2021-11-13 02:43:08,561 INFO L858 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2021-11-13 02:43:08,561 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 366) no Hoare annotation was computed. [2021-11-13 02:43:08,562 INFO L858 garLoopResultBuilder]: For program point L32(lines 32 395) no Hoare annotation was computed. [2021-11-13 02:43:08,562 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 390) no Hoare annotation was computed. [2021-11-13 02:43:08,562 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 244) no Hoare annotation was computed. [2021-11-13 02:43:08,562 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 188) no Hoare annotation was computed. [2021-11-13 02:43:08,562 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 396) no Hoare annotation was computed. [2021-11-13 02:43:08,563 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2021-11-13 02:43:08,563 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 92) no Hoare annotation was computed. [2021-11-13 02:43:08,563 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 162) no Hoare annotation was computed. [2021-11-13 02:43:08,563 INFO L858 garLoopResultBuilder]: For program point L297(line 297) no Hoare annotation was computed. [2021-11-13 02:43:08,564 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 02:43:08,564 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 176) no Hoare annotation was computed. [2021-11-13 02:43:08,564 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 201) no Hoare annotation was computed. [2021-11-13 02:43:08,564 INFO L861 garLoopResultBuilder]: At program point L314(lines 32 395) the Hoare annotation is: true [2021-11-13 02:43:08,564 INFO L858 garLoopResultBuilder]: For program point L215(lines 215 250) no Hoare annotation was computed. [2021-11-13 02:43:08,565 INFO L858 garLoopResultBuilder]: For program point L50(lines 50 253) no Hoare annotation was computed. [2021-11-13 02:43:08,565 INFO L858 garLoopResultBuilder]: For program point L174(lines 174 198) no Hoare annotation was computed. [2021-11-13 02:43:08,565 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 387) no Hoare annotation was computed. [2021-11-13 02:43:08,565 INFO L858 garLoopResultBuilder]: For program point L331(lines 331 354) no Hoare annotation was computed. [2021-11-13 02:43:08,565 INFO L858 garLoopResultBuilder]: For program point L265(lines 265 393) no Hoare annotation was computed. [2021-11-13 02:43:08,566 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 200) no Hoare annotation was computed. [2021-11-13 02:43:08,566 INFO L858 garLoopResultBuilder]: For program point L224(line 224) no Hoare annotation was computed. [2021-11-13 02:43:08,566 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 236) no Hoare annotation was computed. [2021-11-13 02:43:08,566 INFO L854 garLoopResultBuilder]: At program point L249(lines 101 251) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~main__t~0#1|) (< |ULTIMATE.start_main_~main__t~0#1| |ULTIMATE.start_main_~main__tagbuf_len~0#1|)) [2021-11-13 02:43:08,566 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 84) no Hoare annotation was computed. [2021-11-13 02:43:08,567 INFO L858 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2021-11-13 02:43:08,567 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 315) no Hoare annotation was computed. [2021-11-13 02:43:08,567 INFO L858 garLoopResultBuilder]: For program point L142(line 142) no Hoare annotation was computed. [2021-11-13 02:43:08,567 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 309) no Hoare annotation was computed. [2021-11-13 02:43:08,568 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 251) no Hoare annotation was computed. [2021-11-13 02:43:08,568 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 389) no Hoare annotation was computed. [2021-11-13 02:43:08,574 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:08,577 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:43:08,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:43:08 BoogieIcfgContainer [2021-11-13 02:43:08,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:43:08,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:43:08,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:43:08,633 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:43:08,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:40:37" (3/4) ... [2021-11-13 02:43:08,637 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 02:43:08,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-13 02:43:08,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-13 02:43:08,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-13 02:43:08,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 02:43:08,766 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 02:43:08,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:43:08,768 INFO L158 Benchmark]: Toolchain (without parser) took 152617.19ms. Allocated memory was 96.5MB in the beginning and 302.0MB in the end (delta: 205.5MB). Free memory was 60.0MB in the beginning and 269.2MB in the end (delta: -209.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:43:08,769 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:43:08,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.46ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 67.5MB in the end (delta: -7.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:43:08,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.59ms. Allocated memory is still 96.5MB. Free memory was 67.5MB in the beginning and 65.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:43:08,771 INFO L158 Benchmark]: Boogie Preprocessor took 52.51ms. Allocated memory is still 96.5MB. Free memory was 65.3MB in the beginning and 64.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:43:08,776 INFO L158 Benchmark]: RCFGBuilder took 490.62ms. Allocated memory is still 96.5MB. Free memory was 64.0MB in the beginning and 48.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:43:08,777 INFO L158 Benchmark]: TraceAbstraction took 151406.81ms. Allocated memory was 96.5MB in the beginning and 302.0MB in the end (delta: 205.5MB). Free memory was 48.5MB in the beginning and 274.4MB in the end (delta: -225.9MB). Peak memory consumption was 157.3MB. Max. memory is 16.1GB. [2021-11-13 02:43:08,777 INFO L158 Benchmark]: Witness Printer took 134.39ms. Allocated memory is still 302.0MB. Free memory was 274.4MB in the beginning and 269.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 02:43:08,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.46ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 67.5MB in the end (delta: -7.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.59ms. Allocated memory is still 96.5MB. Free memory was 67.5MB in the beginning and 65.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.51ms. Allocated memory is still 96.5MB. Free memory was 65.3MB in the beginning and 64.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.62ms. Allocated memory is still 96.5MB. Free memory was 64.0MB in the beginning and 48.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 151406.81ms. Allocated memory was 96.5MB in the beginning and 302.0MB in the end (delta: 205.5MB). Free memory was 48.5MB in the beginning and 274.4MB in the end (delta: -225.9MB). Peak memory consumption was 157.3MB. Max. memory is 16.1GB. * Witness Printer took 134.39ms. Allocated memory is still 302.0MB. Free memory was 274.4MB in the beginning and 269.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 84]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 126]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 142]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 154]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 176]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 188]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 224]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 236]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 278]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 297]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 309]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 366]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 378]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 151.3s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 136.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1686 SdHoareTripleChecker+Valid, 1821.43ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1686 mSDsluCounter, 2726 SdHoareTripleChecker+Invalid, 1470.21ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1754 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2135 IncrementalHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 976 mSDtfsCounter, 2135 mSolverCounterSat, 41.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 104 SyntacticMatches, 10 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 531 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 185 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1951244 FormulaSimplificationTreeSizeReduction, 135.4s HoareSimplificationTime, 6 FomulaSimplificationsInter, 11241571 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 1574 SizeOfPredicates, 6 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 8/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((main__t == 0 && main__t < main__tagbuf_len) || ((((1 <= __VERIFIER_assert__cond && 1 <= main__t) && ((main__t <= 1 && (main__t == 0 || ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) || (!(__VERIFIER_assert__cond == 0) && (main__t == 0 || ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))))) && 1 <= __VERIFIER_assert__cond) && main__t < main__tagbuf_len)) || ((((1 <= main__t && ((main__t <= 1 && (main__t == 0 || ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) || (!(__VERIFIER_assert__cond == 0) && (main__t == 0 || ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))))) && 1 <= __VERIFIER_assert__cond) && main__t <= 1) && main__t < main__tagbuf_len) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t < main__tagbuf_len - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: ((((1 <= main__t && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && main__t == 0)) && main__t == 0) || ((!(__VERIFIER_assert__cond == 0) && 1 <= __VERIFIER_assert__cond) && ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && main__t == 0)))) && main__t < main__tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-13 02:43:08,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620bcc23-cf58-4c67-9f78-6b4efc265b8d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE