./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan --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 ef15c4790969d8e640b2241771e44174daa41407 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:36:49,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:36:49,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:36:49,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:36:49,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:36:49,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:36:49,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:36:49,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:36:49,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:36:49,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:36:49,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:36:49,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:36:49,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:36:49,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:36:49,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:36:49,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:36:49,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:36:49,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:36:49,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:36:49,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:36:49,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:36:49,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:36:49,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:36:49,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:36:49,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:36:49,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:36:49,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:36:49,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:36:49,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:36:49,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:36:49,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:36:49,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:36:49,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:36:49,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:36:49,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:36:49,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:36:49,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:36:49,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:36:49,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:36:49,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:36:49,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:36:49,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:36:49,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:36:49,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:36:49,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:36:49,937 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:36:49,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:36:49,938 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:36:49,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:36:49,938 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:36:49,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:36:49,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:36:49,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:36:49,940 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:36:49,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:36:49,941 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:36:49,941 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:36:49,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:36:49,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:36:49,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:36:49,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:36:49,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:36:49,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:36:49,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:36:49,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:36:49,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:36:49,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:36:49,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:36:49,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:36:49,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:36:49,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:36:49,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:36:49,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:49,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:36:49,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:36:49,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:36:49,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:36:49,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:36:49,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:36:49,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:36:49,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:36:49,950 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-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef15c4790969d8e640b2241771e44174daa41407 [2020-12-03 12:36:50,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:36:50,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:36:50,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:36:50,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:36:50,285 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:36:50,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-12-03 12:36:50,377 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/data/e68d12906/ccc87dae8e3e4bd4a4f258a0d43d65eb/FLAGc6ed4eb49 [2020-12-03 12:36:50,946 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:36:50,946 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-12-03 12:36:50,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/data/e68d12906/ccc87dae8e3e4bd4a4f258a0d43d65eb/FLAGc6ed4eb49 [2020-12-03 12:36:51,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/data/e68d12906/ccc87dae8e3e4bd4a4f258a0d43d65eb [2020-12-03 12:36:51,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:36:51,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:36:51,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:51,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:36:51,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:36:51,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8bcdfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51, skipping insertion in model container [2020-12-03 12:36:51,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:36:51,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:36:51,538 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2020-12-03 12:36:51,542 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2020-12-03 12:36:51,544 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2020-12-03 12:36:51,546 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2020-12-03 12:36:51,549 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2020-12-03 12:36:51,551 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2020-12-03 12:36:51,553 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2020-12-03 12:36:51,556 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2020-12-03 12:36:51,558 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2020-12-03 12:36:51,560 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2020-12-03 12:36:51,563 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2020-12-03 12:36:51,565 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2020-12-03 12:36:51,567 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2020-12-03 12:36:51,570 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2020-12-03 12:36:51,572 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2020-12-03 12:36:51,574 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2020-12-03 12:36:51,576 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2020-12-03 12:36:51,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:51,588 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:36:51,602 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2020-12-03 12:36:51,604 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2020-12-03 12:36:51,605 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2020-12-03 12:36:51,607 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2020-12-03 12:36:51,609 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2020-12-03 12:36:51,611 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2020-12-03 12:36:51,613 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2020-12-03 12:36:51,614 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2020-12-03 12:36:51,616 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2020-12-03 12:36:51,617 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2020-12-03 12:36:51,620 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2020-12-03 12:36:51,621 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2020-12-03 12:36:51,623 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2020-12-03 12:36:51,625 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2020-12-03 12:36:51,627 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2020-12-03 12:36:51,629 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2020-12-03 12:36:51,631 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2020-12-03 12:36:51,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:51,648 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:36:51,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51 WrapperNode [2020-12-03 12:36:51,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:51,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:51,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:36:51,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:36:51,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:51,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:36:51,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:36:51,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:36:51,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... [2020-12-03 12:36:51,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:36:51,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:36:51,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:36:51,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:36:51,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:36:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:36:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:36:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:36:52,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:36:52,246 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:36:52,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:52 BoogieIcfgContainer [2020-12-03 12:36:52,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:36:52,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:36:52,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:36:52,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:36:52,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:36:51" (1/3) ... [2020-12-03 12:36:52,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d28ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:52, skipping insertion in model container [2020-12-03 12:36:52,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:51" (2/3) ... [2020-12-03 12:36:52,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d28ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:52, skipping insertion in model container [2020-12-03 12:36:52,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:52" (3/3) ... [2020-12-03 12:36:52,264 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-12-03 12:36:52,279 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:36:52,297 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-03 12:36:52,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-03 12:36:52,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:36:52,356 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:36:52,356 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:36:52,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:36:52,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:36:52,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:36:52,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:36:52,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:36:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-12-03 12:36:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:36:52,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:52,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:52,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:52,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:52,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2133700231, now seen corresponding path program 1 times [2020-12-03 12:36:52,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:52,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330281985] [2020-12-03 12:36:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:52,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330281985] [2020-12-03 12:36:52,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:52,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:52,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781520312] [2020-12-03 12:36:52,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:52,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:52,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:52,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:52,760 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-12-03 12:36:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:52,992 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2020-12-03 12:36:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:52,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-03 12:36:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:53,004 INFO L225 Difference]: With dead ends: 120 [2020-12-03 12:36:53,005 INFO L226 Difference]: Without dead ends: 108 [2020-12-03 12:36:53,008 INFO L677 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 [2020-12-03 12:36:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-03 12:36:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2020-12-03 12:36:53,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-03 12:36:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-12-03 12:36:53,049 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 7 [2020-12-03 12:36:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:53,049 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-12-03 12:36:53,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-12-03 12:36:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:36:53,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:53,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:53,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:36:53,056 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2130064740, now seen corresponding path program 1 times [2020-12-03 12:36:53,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:53,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687011942] [2020-12-03 12:36:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:53,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687011942] [2020-12-03 12:36:53,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:53,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:53,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444542888] [2020-12-03 12:36:53,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:53,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:53,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:53,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:53,142 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 4 states. [2020-12-03 12:36:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:53,237 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-03 12:36:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:36:53,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-03 12:36:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:53,239 INFO L225 Difference]: With dead ends: 64 [2020-12-03 12:36:53,239 INFO L226 Difference]: Without dead ends: 62 [2020-12-03 12:36:53,240 INFO L677 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 [2020-12-03 12:36:53,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-03 12:36:53,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-03 12:36:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-03 12:36:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-03 12:36:53,249 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 7 [2020-12-03 12:36:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:53,250 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-03 12:36:53,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-03 12:36:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:36:53,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:53,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:53,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:36:53,251 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:53,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1607501556, now seen corresponding path program 1 times [2020-12-03 12:36:53,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:53,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067343889] [2020-12-03 12:36:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:53,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067343889] [2020-12-03 12:36:53,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:53,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:53,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693158107] [2020-12-03 12:36:53,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:53,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:53,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:53,307 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-12-03 12:36:53,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:53,424 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-03 12:36:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:53,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-03 12:36:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:53,427 INFO L225 Difference]: With dead ends: 68 [2020-12-03 12:36:53,427 INFO L226 Difference]: Without dead ends: 66 [2020-12-03 12:36:53,428 INFO L677 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 [2020-12-03 12:36:53,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-03 12:36:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-12-03 12:36:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-03 12:36:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-12-03 12:36:53,450 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2020-12-03 12:36:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:53,451 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-12-03 12:36:53,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-12-03 12:36:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:36:53,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:53,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:53,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:36:53,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash -448408979, now seen corresponding path program 1 times [2020-12-03 12:36:53,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:53,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77010051] [2020-12-03 12:36:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:53,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77010051] [2020-12-03 12:36:53,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:53,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:53,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450517654] [2020-12-03 12:36:53,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:53,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:53,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:53,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:53,537 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-12-03 12:36:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:53,693 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-12-03 12:36:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:53,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 12:36:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:53,697 INFO L225 Difference]: With dead ends: 66 [2020-12-03 12:36:53,697 INFO L226 Difference]: Without dead ends: 64 [2020-12-03 12:36:53,699 INFO L677 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 [2020-12-03 12:36:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-03 12:36:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-03 12:36:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-03 12:36:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-03 12:36:53,714 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 10 [2020-12-03 12:36:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:53,715 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-03 12:36:53,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:53,715 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-03 12:36:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:36:53,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:53,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:53,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-03 12:36:53,716 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:53,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1379104200, now seen corresponding path program 1 times [2020-12-03 12:36:53,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:53,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828684903] [2020-12-03 12:36:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:53,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828684903] [2020-12-03 12:36:53,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:53,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:53,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283952498] [2020-12-03 12:36:53,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:53,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:53,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:53,822 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 5 states. [2020-12-03 12:36:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:53,982 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-03 12:36:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:53,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 12:36:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:53,984 INFO L225 Difference]: With dead ends: 64 [2020-12-03 12:36:53,985 INFO L226 Difference]: Without dead ends: 62 [2020-12-03 12:36:53,986 INFO L677 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 [2020-12-03 12:36:53,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-03 12:36:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-12-03 12:36:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-03 12:36:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-03 12:36:54,004 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 10 [2020-12-03 12:36:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:54,005 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-03 12:36:54,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-03 12:36:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:36:54,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:54,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:54,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-03 12:36:54,012 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:54,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1015772272, now seen corresponding path program 1 times [2020-12-03 12:36:54,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:54,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147906499] [2020-12-03 12:36:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:54,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147906499] [2020-12-03 12:36:54,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:54,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:54,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318656556] [2020-12-03 12:36:54,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:54,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:54,090 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 4 states. [2020-12-03 12:36:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:54,184 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-03 12:36:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:36:54,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 12:36:54,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:54,186 INFO L225 Difference]: With dead ends: 62 [2020-12-03 12:36:54,186 INFO L226 Difference]: Without dead ends: 58 [2020-12-03 12:36:54,187 INFO L677 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 [2020-12-03 12:36:54,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-03 12:36:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-12-03 12:36:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-03 12:36:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-12-03 12:36:54,199 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 11 [2020-12-03 12:36:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:54,200 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-12-03 12:36:54,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-12-03 12:36:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:36:54,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:54,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:54,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-03 12:36:54,202 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:54,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1015281714, now seen corresponding path program 1 times [2020-12-03 12:36:54,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:54,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919548157] [2020-12-03 12:36:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:54,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919548157] [2020-12-03 12:36:54,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:54,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:54,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233080305] [2020-12-03 12:36:54,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:54,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:54,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:54,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:54,288 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-12-03 12:36:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:54,475 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-03 12:36:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:54,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-03 12:36:54,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:54,478 INFO L225 Difference]: With dead ends: 99 [2020-12-03 12:36:54,478 INFO L226 Difference]: Without dead ends: 97 [2020-12-03 12:36:54,479 INFO L677 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 [2020-12-03 12:36:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-03 12:36:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 55. [2020-12-03 12:36:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-03 12:36:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-03 12:36:54,497 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 11 [2020-12-03 12:36:54,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:54,497 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-03 12:36:54,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-03 12:36:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:36:54,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:54,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:54,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-03 12:36:54,499 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash 197446834, now seen corresponding path program 1 times [2020-12-03 12:36:54,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:54,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014385269] [2020-12-03 12:36:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:54,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014385269] [2020-12-03 12:36:54,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:54,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:54,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394088641] [2020-12-03 12:36:54,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:54,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:54,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:54,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:54,564 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-12-03 12:36:54,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:54,641 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-03 12:36:54,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:36:54,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 12:36:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:54,643 INFO L225 Difference]: With dead ends: 56 [2020-12-03 12:36:54,643 INFO L226 Difference]: Without dead ends: 52 [2020-12-03 12:36:54,643 INFO L677 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 [2020-12-03 12:36:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-03 12:36:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-12-03 12:36:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-03 12:36:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-12-03 12:36:54,650 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 11 [2020-12-03 12:36:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:54,650 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-12-03 12:36:54,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:54,650 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-12-03 12:36:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:36:54,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:54,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:54,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-03 12:36:54,656 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:54,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1408957852, now seen corresponding path program 1 times [2020-12-03 12:36:54,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:54,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881636073] [2020-12-03 12:36:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:54,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881636073] [2020-12-03 12:36:54,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:54,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:36:54,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323365771] [2020-12-03 12:36:54,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:36:54,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:54,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:36:54,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:36:54,812 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-12-03 12:36:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:55,008 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-12-03 12:36:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:36:55,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-03 12:36:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:55,010 INFO L225 Difference]: With dead ends: 117 [2020-12-03 12:36:55,010 INFO L226 Difference]: Without dead ends: 115 [2020-12-03 12:36:55,011 INFO L677 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 [2020-12-03 12:36:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-03 12:36:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 56. [2020-12-03 12:36:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-03 12:36:55,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-12-03 12:36:55,015 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 12 [2020-12-03 12:36:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:55,015 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-12-03 12:36:55,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:36:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-12-03 12:36:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:36:55,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:55,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:55,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-03 12:36:55,017 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:55,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1842939021, now seen corresponding path program 1 times [2020-12-03 12:36:55,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:55,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504542639] [2020-12-03 12:36:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:55,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504542639] [2020-12-03 12:36:55,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:55,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:55,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262714455] [2020-12-03 12:36:55,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:55,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:55,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:55,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:55,056 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2020-12-03 12:36:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:55,188 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-12-03 12:36:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:55,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-03 12:36:55,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:55,190 INFO L225 Difference]: With dead ends: 73 [2020-12-03 12:36:55,191 INFO L226 Difference]: Without dead ends: 71 [2020-12-03 12:36:55,191 INFO L677 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 [2020-12-03 12:36:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-03 12:36:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2020-12-03 12:36:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-03 12:36:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-03 12:36:55,195 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 12 [2020-12-03 12:36:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:55,195 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-03 12:36:55,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-03 12:36:55,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:36:55,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:55,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:55,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-03 12:36:55,201 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:55,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1844662925, now seen corresponding path program 1 times [2020-12-03 12:36:55,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:55,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757537592] [2020-12-03 12:36:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:55,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757537592] [2020-12-03 12:36:55,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:55,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:55,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013608704] [2020-12-03 12:36:55,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:55,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:55,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:55,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:55,265 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2020-12-03 12:36:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:55,376 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-12-03 12:36:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:55,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-03 12:36:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:55,378 INFO L225 Difference]: With dead ends: 54 [2020-12-03 12:36:55,378 INFO L226 Difference]: Without dead ends: 52 [2020-12-03 12:36:55,379 INFO L677 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 [2020-12-03 12:36:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-03 12:36:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-03 12:36:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-03 12:36:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-12-03 12:36:55,383 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 12 [2020-12-03 12:36:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:55,384 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-12-03 12:36:55,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-12-03 12:36:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:36:55,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:55,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:55,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-03 12:36:55,388 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:55,391 INFO L82 PathProgramCache]: Analyzing trace with hash -734819501, now seen corresponding path program 1 times [2020-12-03 12:36:55,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:55,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80832923] [2020-12-03 12:36:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:55,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80832923] [2020-12-03 12:36:55,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:55,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:36:55,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030931595] [2020-12-03 12:36:55,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:36:55,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:36:55,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:36:55,548 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-12-03 12:36:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:55,687 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-12-03 12:36:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:36:55,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-03 12:36:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:55,690 INFO L225 Difference]: With dead ends: 77 [2020-12-03 12:36:55,690 INFO L226 Difference]: Without dead ends: 75 [2020-12-03 12:36:55,690 INFO L677 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 [2020-12-03 12:36:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-03 12:36:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 52. [2020-12-03 12:36:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-03 12:36:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-12-03 12:36:55,697 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 13 [2020-12-03 12:36:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:55,697 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-12-03 12:36:55,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:36:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-12-03 12:36:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:36:55,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:55,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:55,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-03 12:36:55,698 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1296538901, now seen corresponding path program 1 times [2020-12-03 12:36:55,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:55,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159983898] [2020-12-03 12:36:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:55,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159983898] [2020-12-03 12:36:55,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:55,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:36:55,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317264353] [2020-12-03 12:36:55,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:36:55,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:36:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:36:55,833 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-12-03 12:36:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:55,975 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-12-03 12:36:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:36:55,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-03 12:36:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:55,977 INFO L225 Difference]: With dead ends: 91 [2020-12-03 12:36:55,977 INFO L226 Difference]: Without dead ends: 89 [2020-12-03 12:36:55,978 INFO L677 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 [2020-12-03 12:36:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-03 12:36:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 60. [2020-12-03 12:36:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-03 12:36:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-12-03 12:36:55,982 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 13 [2020-12-03 12:36:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:55,984 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-12-03 12:36:55,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:36:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-12-03 12:36:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:36:55,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:55,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:55,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-03 12:36:55,986 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:55,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1298086046, now seen corresponding path program 1 times [2020-12-03 12:36:55,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:55,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512739415] [2020-12-03 12:36:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:56,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512739415] [2020-12-03 12:36:56,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:56,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:56,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169837143] [2020-12-03 12:36:56,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:56,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:56,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:56,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:56,037 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 5 states. [2020-12-03 12:36:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:56,169 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-12-03 12:36:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:56,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-03 12:36:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:56,172 INFO L225 Difference]: With dead ends: 80 [2020-12-03 12:36:56,172 INFO L226 Difference]: Without dead ends: 78 [2020-12-03 12:36:56,173 INFO L677 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 [2020-12-03 12:36:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-03 12:36:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-12-03 12:36:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-03 12:36:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-12-03 12:36:56,181 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2020-12-03 12:36:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:56,181 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-12-03 12:36:56,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-12-03 12:36:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:36:56,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:56,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:56,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-03 12:36:56,182 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:56,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1349979981, now seen corresponding path program 1 times [2020-12-03 12:36:56,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:56,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28767890] [2020-12-03 12:36:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:56,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28767890] [2020-12-03 12:36:56,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:56,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:36:56,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534339577] [2020-12-03 12:36:56,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:36:56,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:36:56,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:36:56,339 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-12-03 12:36:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:56,463 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-12-03 12:36:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:36:56,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-03 12:36:56,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:56,464 INFO L225 Difference]: With dead ends: 69 [2020-12-03 12:36:56,465 INFO L226 Difference]: Without dead ends: 65 [2020-12-03 12:36:56,465 INFO L677 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 [2020-12-03 12:36:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-03 12:36:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-12-03 12:36:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-03 12:36:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-03 12:36:56,469 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2020-12-03 12:36:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:56,469 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-03 12:36:56,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:36:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-03 12:36:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-03 12:36:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:56,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:56,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-03 12:36:56,472 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:56,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1585965895, now seen corresponding path program 1 times [2020-12-03 12:36:56,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:56,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060478848] [2020-12-03 12:36:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:56,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060478848] [2020-12-03 12:36:56,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:56,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:36:56,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485232829] [2020-12-03 12:36:56,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:36:56,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:56,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:36:56,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:36:56,593 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-12-03 12:36:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:56,741 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-12-03 12:36:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:36:56,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-03 12:36:56,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:56,742 INFO L225 Difference]: With dead ends: 86 [2020-12-03 12:36:56,742 INFO L226 Difference]: Without dead ends: 84 [2020-12-03 12:36:56,742 INFO L677 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 [2020-12-03 12:36:56,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-03 12:36:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-12-03 12:36:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-03 12:36:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-12-03 12:36:56,747 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 14 [2020-12-03 12:36:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:56,747 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-12-03 12:36:56,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:36:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-12-03 12:36:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-03 12:36:56,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:56,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:56,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-03 12:36:56,748 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash 433495416, now seen corresponding path program 1 times [2020-12-03 12:36:56,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:56,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109343178] [2020-12-03 12:36:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:56,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109343178] [2020-12-03 12:36:56,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:56,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:56,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900224564] [2020-12-03 12:36:56,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:56,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:56,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:56,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:56,779 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 4 states. [2020-12-03 12:36:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:56,822 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-03 12:36:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:36:56,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-03 12:36:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:56,823 INFO L225 Difference]: With dead ends: 62 [2020-12-03 12:36:56,823 INFO L226 Difference]: Without dead ends: 60 [2020-12-03 12:36:56,824 INFO L677 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 [2020-12-03 12:36:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-03 12:36:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-03 12:36:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-03 12:36:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-12-03 12:36:56,828 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 15 [2020-12-03 12:36:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:56,828 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-12-03 12:36:56,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-12-03 12:36:56,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-03 12:36:56,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:56,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:56,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-03 12:36:56,829 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:56,829 INFO L82 PathProgramCache]: Analyzing trace with hash 553460123, now seen corresponding path program 1 times [2020-12-03 12:36:56,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:56,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824154312] [2020-12-03 12:36:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:56,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824154312] [2020-12-03 12:36:56,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:56,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:56,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010944898] [2020-12-03 12:36:56,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:56,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:56,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:56,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:56,860 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2020-12-03 12:36:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:56,923 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-12-03 12:36:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:36:56,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-03 12:36:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:56,924 INFO L225 Difference]: With dead ends: 60 [2020-12-03 12:36:56,924 INFO L226 Difference]: Without dead ends: 56 [2020-12-03 12:36:56,925 INFO L677 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 [2020-12-03 12:36:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-03 12:36:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-03 12:36:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-03 12:36:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-12-03 12:36:56,929 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 16 [2020-12-03 12:36:56,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:56,929 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-12-03 12:36:56,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-12-03 12:36:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 12:36:56,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:56,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:56,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-03 12:36:56,930 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:56,930 INFO L82 PathProgramCache]: Analyzing trace with hash -995706929, now seen corresponding path program 1 times [2020-12-03 12:36:56,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:56,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562928670] [2020-12-03 12:36:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:56,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562928670] [2020-12-03 12:36:56,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701811809] [2020-12-03 12:36:56,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:36:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:57,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 12:36:57,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:36:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:57,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:36:57,369 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-03 12:36:57,382 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:36:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:57,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871699192] [2020-12-03 12:36:57,455 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-12-03 12:36:57,455 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:36:57,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:36:57,466 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:36:57,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:36:58,088 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:36:58,683 WARN L197 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-12-03 12:36:58,915 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-03 12:36:59,165 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-03 12:36:59,455 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-03 12:36:59,763 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-12-03 12:37:00,065 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-12-03 12:37:00,890 WARN L197 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-12-03 12:37:01,164 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-03 12:37:01,477 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-03 12:37:01,843 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-12-03 12:37:02,270 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-12-03 12:37:02,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:37:02,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:37:02,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2020-12-03 12:37:02,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383431323] [2020-12-03 12:37:02,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 12:37:02,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:02,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 12:37:02,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-12-03 12:37:02,276 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 12 states. [2020-12-03 12:37:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:02,609 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-12-03 12:37:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:37:02,609 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-03 12:37:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:02,610 INFO L225 Difference]: With dead ends: 92 [2020-12-03 12:37:02,610 INFO L226 Difference]: Without dead ends: 90 [2020-12-03 12:37:02,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2020-12-03 12:37:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-03 12:37:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 52. [2020-12-03 12:37:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-03 12:37:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-12-03 12:37:02,616 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 17 [2020-12-03 12:37:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:02,617 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-12-03 12:37:02,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 12:37:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-12-03 12:37:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 12:37:02,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:02,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:37:02,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:37:02,837 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:02,837 INFO L82 PathProgramCache]: Analyzing trace with hash -7486289, now seen corresponding path program 1 times [2020-12-03 12:37:02,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:02,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449657211] [2020-12-03 12:37:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:02,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449657211] [2020-12-03 12:37:02,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:37:02,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:37:02,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906000118] [2020-12-03 12:37:02,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:37:02,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:02,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:37:02,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:37:02,922 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 6 states. [2020-12-03 12:37:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:03,057 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-12-03 12:37:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:37:03,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-03 12:37:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:03,058 INFO L225 Difference]: With dead ends: 67 [2020-12-03 12:37:03,059 INFO L226 Difference]: Without dead ends: 65 [2020-12-03 12:37:03,059 INFO L677 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 [2020-12-03 12:37:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-03 12:37:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2020-12-03 12:37:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-03 12:37:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-03 12:37:03,065 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 17 [2020-12-03 12:37:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:03,066 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-03 12:37:03,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:37:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-03 12:37:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 12:37:03,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:03,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:37:03,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-03 12:37:03,070 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:03,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1807516650, now seen corresponding path program 1 times [2020-12-03 12:37:03,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:03,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002162175] [2020-12-03 12:37:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:03,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002162175] [2020-12-03 12:37:03,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:37:03,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:37:03,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806935653] [2020-12-03 12:37:03,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:37:03,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:03,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:37:03,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:37:03,155 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 6 states. [2020-12-03 12:37:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:03,286 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-12-03 12:37:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:37:03,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-03 12:37:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:03,288 INFO L225 Difference]: With dead ends: 59 [2020-12-03 12:37:03,288 INFO L226 Difference]: Without dead ends: 57 [2020-12-03 12:37:03,288 INFO L677 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 [2020-12-03 12:37:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-03 12:37:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-12-03 12:37:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-03 12:37:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-12-03 12:37:03,296 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 18 [2020-12-03 12:37:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:03,296 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-12-03 12:37:03,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:37:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-12-03 12:37:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 12:37:03,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:03,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:37:03,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-03 12:37:03,297 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1754075570, now seen corresponding path program 1 times [2020-12-03 12:37:03,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:03,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151687486] [2020-12-03 12:37:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:03,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151687486] [2020-12-03 12:37:03,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:37:03,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:37:03,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387303212] [2020-12-03 12:37:03,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:37:03,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:03,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:37:03,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:37:03,374 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 6 states. [2020-12-03 12:37:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:03,472 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-12-03 12:37:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:37:03,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-03 12:37:03,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:03,473 INFO L225 Difference]: With dead ends: 42 [2020-12-03 12:37:03,473 INFO L226 Difference]: Without dead ends: 19 [2020-12-03 12:37:03,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-03 12:37:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-03 12:37:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-03 12:37:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-03 12:37:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-03 12:37:03,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-12-03 12:37:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:03,477 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-03 12:37:03,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:37:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-03 12:37:03,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 12:37:03,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:37:03,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:37:03,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-03 12:37:03,479 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:37:03,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:37:03,480 INFO L82 PathProgramCache]: Analyzing trace with hash -808942776, now seen corresponding path program 1 times [2020-12-03 12:37:03,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:37:03,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452083673] [2020-12-03 12:37:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:37:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:03,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452083673] [2020-12-03 12:37:03,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412320374] [2020-12-03 12:37:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:37:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:37:03,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 12:37:03,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:37:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:03,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:37:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:37:03,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [378636608] [2020-12-03 12:37:03,846 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-12-03 12:37:03,846 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:37:03,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:37:03,847 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:37:03,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:37:04,323 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:37:04,630 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-12-03 12:37:04,857 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-03 12:37:05,093 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-03 12:37:05,376 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-03 12:37:05,651 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-12-03 12:37:05,981 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-12-03 12:37:06,784 WARN L197 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-12-03 12:37:07,001 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-03 12:37:07,296 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-12-03 12:37:07,623 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-12-03 12:37:07,996 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-12-03 12:37:08,517 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-12-03 12:37:08,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:37:08,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:37:08,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2020-12-03 12:37:08,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898564371] [2020-12-03 12:37:08,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 12:37:08,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:37:08,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 12:37:08,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-12-03 12:37:08,520 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2020-12-03 12:37:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:37:08,707 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-12-03 12:37:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 12:37:08,707 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-03 12:37:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:37:08,707 INFO L225 Difference]: With dead ends: 19 [2020-12-03 12:37:08,707 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:37:08,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2020-12-03 12:37:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:37:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:37:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:37:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:37:08,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-03 12:37:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:37:08,709 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:37:08,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 12:37:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:37:08,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:37:08,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-03 12:37:08,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:37:09,163 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 14 [2020-12-03 12:37:09,322 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-03 12:37:09,568 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-12-03 12:37:09,652 INFO L262 CegarLoopResult]: For program point L225(line 225) no Hoare annotation was computed. [2020-12-03 12:37:09,652 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2020-12-03 12:37:09,652 INFO L262 CegarLoopResult]: For program point L349(lines 349 358) no Hoare annotation was computed. [2020-12-03 12:37:09,652 INFO L258 CegarLoopResult]: At program point L250(lines 102 252) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-12-03 12:37:09,652 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 56) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point L308(lines 308 316) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 279) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point L102(lines 102 252) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point L325(lines 325 362) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-12-03 12:37:09,653 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point L20(lines 20 374) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point L177(line 177) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 339) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point L235(lines 235 243) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point L351(line 351) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 237) no Hoare annotation was computed. [2020-12-03 12:37:09,654 INFO L262 CegarLoopResult]: For program point L153(lines 153 161) no Hoare annotation was computed. [2020-12-03 12:37:09,655 INFO L262 CegarLoopResult]: For program point L54(lines 54 254) no Hoare annotation was computed. [2020-12-03 12:37:09,655 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2020-12-03 12:37:09,655 INFO L262 CegarLoopResult]: For program point L310(line 310) no Hoare annotation was computed. [2020-12-03 12:37:09,655 INFO L262 CegarLoopResult]: For program point L277(lines 277 364) no Hoare annotation was computed. [2020-12-03 12:37:09,655 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 310) no Hoare annotation was computed. [2020-12-03 12:37:09,655 INFO L262 CegarLoopResult]: For program point L71(lines 71 95) no Hoare annotation was computed. [2020-12-03 12:37:09,655 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-12-03 12:37:09,656 INFO L262 CegarLoopResult]: For program point L187(lines 187 197) no Hoare annotation was computed. [2020-12-03 12:37:09,656 INFO L262 CegarLoopResult]: For program point L113(lines 113 204) no Hoare annotation was computed. [2020-12-03 12:37:09,656 INFO L262 CegarLoopResult]: For program point L237(line 237) no Hoare annotation was computed. [2020-12-03 12:37:09,656 INFO L258 CegarLoopResult]: At program point L328(lines 32 368) the Hoare annotation is: (let ((.cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0)) (.cse3 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse1 (let ((.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse4 .cse0 .cse3) (and .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0)))))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (= ULTIMATE.start_main_~main__t~0 0)) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse1 (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) .cse2) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1 (<= 0 ULTIMATE.start_main_~main__t~0) .cse3 .cse2)))) [2020-12-03 12:37:09,656 INFO L258 CegarLoopResult]: At program point L196(lines 60 254) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 127) no Hoare annotation was computed. [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point L279(line 279) no Hoare annotation was computed. [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point L337(lines 337 360) no Hoare annotation was computed. [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 351) no Hoare annotation was computed. [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point L106(lines 106 210) no Hoare annotation was computed. [2020-12-03 12:37:09,657 INFO L262 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-12-03 12:37:09,658 INFO L262 CegarLoopResult]: For program point L296(lines 296 318) no Hoare annotation was computed. [2020-12-03 12:37:09,658 INFO L262 CegarLoopResult]: For program point L32(lines 32 368) no Hoare annotation was computed. [2020-12-03 12:37:09,658 INFO L262 CegarLoopResult]: For program point L189(line 189) no Hoare annotation was computed. [2020-12-03 12:37:09,658 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2020-12-03 12:37:09,658 INFO L262 CegarLoopResult]: For program point L24(lines 24 369) no Hoare annotation was computed. [2020-12-03 12:37:09,658 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-12-03 12:37:09,658 INFO L262 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point L289(lines 289 363) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point L223(lines 223 245) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point L83(lines 83 93) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point L339(line 339) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point L141(lines 141 163) no Hoare annotation was computed. [2020-12-03 12:37:09,659 INFO L262 CegarLoopResult]: For program point L42(lines 42 256) no Hoare annotation was computed. [2020-12-03 12:37:09,660 INFO L262 CegarLoopResult]: For program point L298(line 298) no Hoare annotation was computed. [2020-12-03 12:37:09,660 INFO L262 CegarLoopResult]: For program point L125(lines 125 202) no Hoare annotation was computed. [2020-12-03 12:37:09,660 INFO L265 CegarLoopResult]: At program point L315(lines 32 368) the Hoare annotation is: true [2020-12-03 12:37:09,660 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 225) no Hoare annotation was computed. [2020-12-03 12:37:09,660 INFO L262 CegarLoopResult]: For program point L216(lines 216 251) no Hoare annotation was computed. [2020-12-03 12:37:09,660 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2020-12-03 12:37:09,660 INFO L265 CegarLoopResult]: At program point L373(lines 15 375) the Hoare annotation is: true [2020-12-03 12:37:09,660 INFO L262 CegarLoopResult]: For program point L175(lines 175 199) no Hoare annotation was computed. [2020-12-03 12:37:09,661 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 298) no Hoare annotation was computed. [2020-12-03 12:37:09,661 INFO L262 CegarLoopResult]: For program point L266(lines 266 366) no Hoare annotation was computed. [2020-12-03 12:37:09,661 INFO L262 CegarLoopResult]: For program point L134(lines 134 201) no Hoare annotation was computed. [2020-12-03 12:37:09,661 INFO L258 CegarLoopResult]: At program point L357(lines 283 364) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse4 .cse2) (and .cse4 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse3 .cse2) (and .cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)))))) (.cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) .cse1) (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse2 .cse1)))) [2020-12-03 12:37:09,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:37:09 BoogieIcfgContainer [2020-12-03 12:37:09,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:37:09,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:37:09,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:37:09,681 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:37:09,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:52" (3/4) ... [2020-12-03 12:37:09,684 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:37:09,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-03 12:37:09,698 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:37:09,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:37:09,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:37:09,791 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4d174f8a-7d2e-49ce-ba32-a5f7cc152f3b/bin/utaipan/witness.graphml [2020-12-03 12:37:09,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:37:09,793 INFO L168 Benchmark]: Toolchain (without parser) took 18494.61 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 84.7 MB in the beginning and 86.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:09,793 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 31.4 MB in the beginning and 31.4 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:09,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.30 ms. Allocated memory is still 119.5 MB. Free memory was 84.5 MB in the beginning and 88.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:09,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 119.5 MB. Free memory was 88.3 MB in the beginning and 86.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:09,794 INFO L168 Benchmark]: Boogie Preprocessor took 35.89 ms. Allocated memory is still 119.5 MB. Free memory was 86.2 MB in the beginning and 85.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:37:09,795 INFO L168 Benchmark]: RCFGBuilder took 518.33 ms. Allocated memory is still 119.5 MB. Free memory was 85.0 MB in the beginning and 58.3 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:09,795 INFO L168 Benchmark]: TraceAbstraction took 17429.70 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 58.3 MB in the beginning and 91.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:09,796 INFO L168 Benchmark]: Witness Printer took 111.39 ms. Allocated memory is still 174.1 MB. Free memory was 91.3 MB in the beginning and 86.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:37:09,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 31.4 MB in the beginning and 31.4 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.30 ms. Allocated memory is still 119.5 MB. Free memory was 84.5 MB in the beginning and 88.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 119.5 MB. Free memory was 88.3 MB in the beginning and 86.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.89 ms. Allocated memory is still 119.5 MB. Free memory was 86.2 MB in the beginning and 85.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 518.33 ms. Allocated memory is still 119.5 MB. Free memory was 85.0 MB in the beginning and 58.3 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17429.70 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 58.3 MB in the beginning and 91.3 MB in the end (delta: -32.9 MB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. * Witness Printer took 111.39 ms. Allocated memory is still 174.1 MB. Free memory was 91.3 MB in the beginning and 86.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 351]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 339]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 279]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 127]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 143]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 225]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 310]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 298]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 237]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((0 < main__tagbuf_len && main__t == 0) || (((((!(main__t == main__tagbuf_len) && (((!(__VERIFIER_assert__cond == 0) && 0 < main__tagbuf_len) && main__t <= 1) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__t) && main__t <= main__tagbuf_len) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1)) || ((((main__t < main__tagbuf_len && (((!(__VERIFIER_assert__cond == 0) && 0 < main__tagbuf_len) && main__t <= 1) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 0 <= main__t) && main__t <= 1) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && !(main__t == main__tagbuf_len)) && main__t <= main__tagbuf_len) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) || (((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && 0 < main__tagbuf_len) && main__t == 0) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0)) && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 69 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.5s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 933 SDtfs, 1525 SDslu, 1302 SDs, 0 SdLazy, 1662 SolverSat, 158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 117 SyntacticMatches, 8 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 338 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 225 HoareAnnotationTreeSize, 6 FomulaSimplifications, 257383 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 16323 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 14838 SizeOfPredicates, 16 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 12/24 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...