./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/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 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:30:25,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:30:25,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:30:25,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:30:25,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:30:25,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:30:25,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:30:25,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:30:25,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:30:25,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:30:25,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:30:25,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:30:25,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:30:25,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:30:25,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:30:25,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:30:25,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:30:25,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:30:25,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:30:25,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:30:25,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:30:25,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:30:25,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:30:25,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:30:25,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:30:25,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:30:25,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:30:25,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:30:25,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:30:25,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:30:25,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:30:25,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:30:25,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:30:25,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:30:25,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:30:25,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:30:25,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:30:25,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:30:25,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:30:25,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:30:25,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:30:26,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:30:26,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:30:26,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:30:26,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:30:26,049 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:30:26,049 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:30:26,049 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:30:26,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:30:26,050 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:30:26,050 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:30:26,050 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:30:26,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:30:26,052 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:30:26,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:30:26,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:30:26,052 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:30:26,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:30:26,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:30:26,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:30:26,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:30:26,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:30:26,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:30:26,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:30:26,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:30:26,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:30:26,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:30:26,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:30:26,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:30:26,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:30:26,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:30:26,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:30:26,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:30:26,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:30:26,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:30:26,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:30:26,059 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:30:26,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:30:26,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:30:26,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:30:26,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:30:26,060 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_0175dc98-79d0-4d21-9504-294a08245aec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 [2020-12-03 12:30:26,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:30:26,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:30:26,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:30:26,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:30:26,411 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:30:26,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-12-03 12:30:26,503 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/data/f5595f3a7/6055de2474d046668702d2f198cc2e3b/FLAGc7cd464c7 [2020-12-03 12:30:27,097 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:30:27,098 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-12-03 12:30:27,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/data/f5595f3a7/6055de2474d046668702d2f198cc2e3b/FLAGc7cd464c7 [2020-12-03 12:30:27,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/data/f5595f3a7/6055de2474d046668702d2f198cc2e3b [2020-12-03 12:30:27,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:30:27,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:30:27,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:27,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:30:27,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:30:27,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220104d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27, skipping insertion in model container [2020-12-03 12:30:27,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:30:27,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:30:27,699 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2020-12-03 12:30:27,716 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2020-12-03 12:30:27,727 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2020-12-03 12:30:27,730 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2020-12-03 12:30:27,733 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2020-12-03 12:30:27,737 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2020-12-03 12:30:27,744 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2020-12-03 12:30:27,747 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2020-12-03 12:30:27,751 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2020-12-03 12:30:27,757 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2020-12-03 12:30:27,762 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2020-12-03 12:30:27,767 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2020-12-03 12:30:27,770 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2020-12-03 12:30:27,776 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2020-12-03 12:30:27,778 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2020-12-03 12:30:27,781 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2020-12-03 12:30:27,785 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2020-12-03 12:30:27,790 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2020-12-03 12:30:27,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:27,803 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:30:27,819 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2020-12-03 12:30:27,825 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2020-12-03 12:30:27,828 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2020-12-03 12:30:27,835 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2020-12-03 12:30:27,839 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2020-12-03 12:30:27,841 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2020-12-03 12:30:27,847 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2020-12-03 12:30:27,849 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2020-12-03 12:30:27,850 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2020-12-03 12:30:27,856 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2020-12-03 12:30:27,864 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2020-12-03 12:30:27,867 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2020-12-03 12:30:27,872 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2020-12-03 12:30:27,874 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2020-12-03 12:30:27,876 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2020-12-03 12:30:27,877 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2020-12-03 12:30:27,879 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2020-12-03 12:30:27,880 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_0175dc98-79d0-4d21-9504-294a08245aec/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2020-12-03 12:30:27,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:30:27,898 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:30:27,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27 WrapperNode [2020-12-03 12:30:27,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:30:27,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:27,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:30:27,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:30:27,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:30:27,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:30:27,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:30:27,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:30:27,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... [2020-12-03 12:30:27,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:30:27,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:30:27,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:30:27,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:30:27,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/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 12:30:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:30:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:30:28,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:30:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:30:28,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:30:28,672 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:30:28,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:28 BoogieIcfgContainer [2020-12-03 12:30:28,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:30:28,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:30:28,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:30:28,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:30:28,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:30:27" (1/3) ... [2020-12-03 12:30:28,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f20911d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:28, skipping insertion in model container [2020-12-03 12:30:28,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:30:27" (2/3) ... [2020-12-03 12:30:28,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f20911d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:30:28, skipping insertion in model container [2020-12-03 12:30:28,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:28" (3/3) ... [2020-12-03 12:30:28,694 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-12-03 12:30:28,709 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:30:28,714 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-12-03 12:30:28,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-12-03 12:30:28,771 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:30:28,772 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:30:28,772 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:30:28,772 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:30:28,772 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:30:28,773 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:30:28,773 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:30:28,773 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:30:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-12-03 12:30:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:30:28,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:28,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:28,810 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.startErr17ASSERT_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 12:30:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:28,819 INFO L82 PathProgramCache]: Analyzing trace with hash -101219053, now seen corresponding path program 1 times [2020-12-03 12:30:28,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:28,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237144955] [2020-12-03 12:30:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:29,128 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 12:30:29,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237144955] [2020-12-03 12:30:29,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:29,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:29,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124492514] [2020-12-03 12:30:29,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:29,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:29,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:29,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:29,165 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-12-03 12:30:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:29,387 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-12-03 12:30:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:29,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-03 12:30:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:29,409 INFO L225 Difference]: With dead ends: 118 [2020-12-03 12:30:29,414 INFO L226 Difference]: Without dead ends: 106 [2020-12-03 12:30:29,417 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 12:30:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-03 12:30:29,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2020-12-03 12:30:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-03 12:30:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-12-03 12:30:29,471 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 7 [2020-12-03 12:30:29,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:29,472 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-12-03 12:30:29,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-12-03 12:30:29,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 12:30:29,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:29,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:29,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:30:29,474 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.startErr17ASSERT_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 12:30:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash -104789997, now seen corresponding path program 1 times [2020-12-03 12:30:29,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:29,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425859928] [2020-12-03 12:30:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:29,558 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 12:30:29,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425859928] [2020-12-03 12:30:29,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:29,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:29,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935396684] [2020-12-03 12:30:29,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:29,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:29,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:29,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:29,565 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2020-12-03 12:30:29,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:29,665 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-12-03 12:30:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:29,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-03 12:30:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:29,671 INFO L225 Difference]: With dead ends: 106 [2020-12-03 12:30:29,671 INFO L226 Difference]: Without dead ends: 104 [2020-12-03 12:30:29,672 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 12:30:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-03 12:30:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2020-12-03 12:30:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-03 12:30:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-03 12:30:29,679 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 7 [2020-12-03 12:30:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:29,680 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-03 12:30:29,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-03 12:30:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:30:29,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:29,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:29,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:30:29,681 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.startErr17ASSERT_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 12:30:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:29,684 INFO L82 PathProgramCache]: Analyzing trace with hash -345778017, now seen corresponding path program 1 times [2020-12-03 12:30:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:29,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934689176] [2020-12-03 12:30:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:29,776 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 12:30:29,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934689176] [2020-12-03 12:30:29,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:29,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:29,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957243319] [2020-12-03 12:30:29,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:29,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:29,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:29,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:29,779 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-12-03 12:30:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:29,905 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-03 12:30:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:29,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 12:30:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:29,911 INFO L225 Difference]: With dead ends: 68 [2020-12-03 12:30:29,911 INFO L226 Difference]: Without dead ends: 66 [2020-12-03 12:30:29,912 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 12:30:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-03 12:30:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-12-03 12:30:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-03 12:30:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-12-03 12:30:29,929 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 10 [2020-12-03 12:30:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:29,929 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-12-03 12:30:29,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-12-03 12:30:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:30:29,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:29,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:29,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:30:29,931 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.startErr17ASSERT_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 12:30:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:29,931 INFO L82 PathProgramCache]: Analyzing trace with hash 646297484, now seen corresponding path program 1 times [2020-12-03 12:30:29,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:29,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656474960] [2020-12-03 12:30:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:30,034 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 12:30:30,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656474960] [2020-12-03 12:30:30,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:30,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:30,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458241001] [2020-12-03 12:30:30,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:30,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:30,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:30,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:30,037 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-12-03 12:30:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:30,166 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-12-03 12:30:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:30,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 12:30:30,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:30,167 INFO L225 Difference]: With dead ends: 66 [2020-12-03 12:30:30,168 INFO L226 Difference]: Without dead ends: 64 [2020-12-03 12:30:30,168 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 12:30:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-03 12:30:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-12-03 12:30:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-03 12:30:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-03 12:30:30,174 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2020-12-03 12:30:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:30,175 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-03 12:30:30,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-03 12:30:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:30:30,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:30,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:30,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-03 12:30:30,176 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.startErr17ASSERT_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 12:30:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:30,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2129179748, now seen corresponding path program 1 times [2020-12-03 12:30:30,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:30,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869777617] [2020-12-03 12:30:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:30,217 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 12:30:30,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869777617] [2020-12-03 12:30:30,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:30,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:30,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912566471] [2020-12-03 12:30:30,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:30,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:30,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:30,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:30,219 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-12-03 12:30:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:30,285 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-03 12:30:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:30,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 12:30:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:30,292 INFO L225 Difference]: With dead ends: 64 [2020-12-03 12:30:30,292 INFO L226 Difference]: Without dead ends: 60 [2020-12-03 12:30:30,293 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 12:30:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-03 12:30:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-03 12:30:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-03 12:30:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-03 12:30:30,304 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 11 [2020-12-03 12:30:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:30,304 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-03 12:30:30,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-03 12:30:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:30:30,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:30,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:30,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-03 12:30:30,309 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.startErr17ASSERT_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 12:30:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2128691176, now seen corresponding path program 1 times [2020-12-03 12:30:30,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:30,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529763116] [2020-12-03 12:30:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:30,403 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 12:30:30,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529763116] [2020-12-03 12:30:30,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:30,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:30,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778275595] [2020-12-03 12:30:30,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:30,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:30,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:30,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:30,407 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2020-12-03 12:30:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:30,542 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-03 12:30:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:30,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-03 12:30:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:30,545 INFO L225 Difference]: With dead ends: 94 [2020-12-03 12:30:30,545 INFO L226 Difference]: Without dead ends: 92 [2020-12-03 12:30:30,547 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 12:30:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-03 12:30:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-12-03 12:30:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-03 12:30:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-03 12:30:30,556 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 11 [2020-12-03 12:30:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:30,556 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-03 12:30:30,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-03 12:30:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:30:30,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:30,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:30,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-03 12:30:30,559 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.startErr17ASSERT_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 12:30:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:30,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2128675288, now seen corresponding path program 1 times [2020-12-03 12:30:30,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:30,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916506867] [2020-12-03 12:30:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:30,634 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 12:30:30,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916506867] [2020-12-03 12:30:30,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:30,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:30,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228231709] [2020-12-03 12:30:30,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:30,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:30,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:30,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:30,639 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2020-12-03 12:30:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:30,765 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-03 12:30:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:30,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-03 12:30:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:30,767 INFO L225 Difference]: With dead ends: 99 [2020-12-03 12:30:30,769 INFO L226 Difference]: Without dead ends: 97 [2020-12-03 12:30:30,769 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 12:30:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-03 12:30:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2020-12-03 12:30:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-03 12:30:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-03 12:30:30,783 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-12-03 12:30:30,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:30,783 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-03 12:30:30,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-03 12:30:30,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:30:30,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:30,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:30,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-03 12:30:30,785 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.startErr17ASSERT_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 12:30:30,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:30,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1439610404, now seen corresponding path program 1 times [2020-12-03 12:30:30,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:30,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756715717] [2020-12-03 12:30:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:30,838 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 12:30:30,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756715717] [2020-12-03 12:30:30,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:30,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:30,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125678932] [2020-12-03 12:30:30,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:30,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:30,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:30,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:30,841 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2020-12-03 12:30:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:30,897 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-03 12:30:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:30,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 12:30:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:30,899 INFO L225 Difference]: With dead ends: 56 [2020-12-03 12:30:30,899 INFO L226 Difference]: Without dead ends: 52 [2020-12-03 12:30:30,900 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 12:30:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-03 12:30:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-12-03 12:30:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-03 12:30:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-12-03 12:30:30,911 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2020-12-03 12:30:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:30,911 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-12-03 12:30:30,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-12-03 12:30:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:30:30,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:30,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:30,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-03 12:30:30,913 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.startErr17ASSERT_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 12:30:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:30,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1564912810, now seen corresponding path program 1 times [2020-12-03 12:30:30,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:30,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149814752] [2020-12-03 12:30:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:31,051 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 12:30:31,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149814752] [2020-12-03 12:30:31,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:31,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:30:31,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134382452] [2020-12-03 12:30:31,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:31,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:31,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:31,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:31,053 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2020-12-03 12:30:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:31,171 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-12-03 12:30:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:30:31,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-03 12:30:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:31,172 INFO L225 Difference]: With dead ends: 117 [2020-12-03 12:30:31,172 INFO L226 Difference]: Without dead ends: 115 [2020-12-03 12:30:31,173 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 12:30:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-03 12:30:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 55. [2020-12-03 12:30:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-03 12:30:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-12-03 12:30:31,189 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-12-03 12:30:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:31,189 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-12-03 12:30:31,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-12-03 12:30:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:30:31,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:31,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:31,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-03 12:30:31,190 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.startErr17ASSERT_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 12:30:31,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:31,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1564420266, now seen corresponding path program 1 times [2020-12-03 12:30:31,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:31,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763344269] [2020-12-03 12:30:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:31,275 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 12:30:31,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763344269] [2020-12-03 12:30:31,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:31,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:30:31,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872803777] [2020-12-03 12:30:31,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:31,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:31,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:31,277 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 6 states. [2020-12-03 12:30:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:31,394 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-12-03 12:30:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:30:31,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-03 12:30:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:31,395 INFO L225 Difference]: With dead ends: 115 [2020-12-03 12:30:31,395 INFO L226 Difference]: Without dead ends: 113 [2020-12-03 12:30:31,395 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 12:30:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-03 12:30:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 57. [2020-12-03 12:30:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-03 12:30:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-12-03 12:30:31,399 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 12 [2020-12-03 12:30:31,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:31,400 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-12-03 12:30:31,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-12-03 12:30:31,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:30:31,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:31,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:31,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-03 12:30:31,402 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.startErr17ASSERT_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 12:30:31,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:31,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1661195103, now seen corresponding path program 1 times [2020-12-03 12:30:31,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:31,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369841319] [2020-12-03 12:30:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:31,462 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 12:30:31,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369841319] [2020-12-03 12:30:31,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:31,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:31,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721704170] [2020-12-03 12:30:31,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:31,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:31,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:31,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:31,468 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-12-03 12:30:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:31,558 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-12-03 12:30:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:31,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-03 12:30:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:31,560 INFO L225 Difference]: With dead ends: 75 [2020-12-03 12:30:31,561 INFO L226 Difference]: Without dead ends: 73 [2020-12-03 12:30:31,561 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 12:30:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-03 12:30:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2020-12-03 12:30:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-03 12:30:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-12-03 12:30:31,564 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-12-03 12:30:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:31,564 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-12-03 12:30:31,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-12-03 12:30:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:30:31,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:31,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:31,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-03 12:30:31,565 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.startErr17ASSERT_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 12:30:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1659471199, now seen corresponding path program 1 times [2020-12-03 12:30:31,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:31,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206240317] [2020-12-03 12:30:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:31,601 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 12:30:31,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206240317] [2020-12-03 12:30:31,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:31,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:31,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536078421] [2020-12-03 12:30:31,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:31,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:31,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:31,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:31,603 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2020-12-03 12:30:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:31,682 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-12-03 12:30:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:31,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-03 12:30:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:31,683 INFO L225 Difference]: With dead ends: 56 [2020-12-03 12:30:31,683 INFO L226 Difference]: Without dead ends: 54 [2020-12-03 12:30:31,683 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 12:30:31,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-03 12:30:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-12-03 12:30:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-03 12:30:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-12-03 12:30:31,687 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2020-12-03 12:30:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:31,687 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-12-03 12:30:31,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-12-03 12:30:31,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:30:31,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:31,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:31,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-03 12:30:31,689 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.startErr17ASSERT_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 12:30:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:31,689 INFO L82 PathProgramCache]: Analyzing trace with hash 42563455, now seen corresponding path program 1 times [2020-12-03 12:30:31,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:31,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360098927] [2020-12-03 12:30:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:31,818 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 12:30:31,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360098927] [2020-12-03 12:30:31,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:31,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:30:31,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914290977] [2020-12-03 12:30:31,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:31,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:31,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:31,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:31,819 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-12-03 12:30:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:31,954 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-12-03 12:30:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:30:31,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-03 12:30:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:31,957 INFO L225 Difference]: With dead ends: 91 [2020-12-03 12:30:31,957 INFO L226 Difference]: Without dead ends: 89 [2020-12-03 12:30:31,957 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 12:30:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-03 12:30:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59. [2020-12-03 12:30:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-03 12:30:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-03 12:30:31,962 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2020-12-03 12:30:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:31,965 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-03 12:30:31,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-03 12:30:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:30:31,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:31,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:31,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-03 12:30:31,971 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.startErr17ASSERT_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 12:30:31,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:31,971 INFO L82 PathProgramCache]: Analyzing trace with hash 44110600, now seen corresponding path program 1 times [2020-12-03 12:30:31,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:31,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624595198] [2020-12-03 12:30:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:32,012 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 12:30:32,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624595198] [2020-12-03 12:30:32,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:32,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:30:32,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789581077] [2020-12-03 12:30:32,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:30:32,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:30:32,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:30:32,017 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-12-03 12:30:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:32,119 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-12-03 12:30:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:32,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-03 12:30:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:32,120 INFO L225 Difference]: With dead ends: 79 [2020-12-03 12:30:32,120 INFO L226 Difference]: Without dead ends: 77 [2020-12-03 12:30:32,122 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 12:30:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-03 12:30:32,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2020-12-03 12:30:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-03 12:30:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-12-03 12:30:32,126 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2020-12-03 12:30:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:32,126 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-12-03 12:30:32,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:30:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-12-03 12:30:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 12:30:32,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:32,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:32,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-03 12:30:32,131 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.startErr17ASSERT_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 12:30:32,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:32,132 INFO L82 PathProgramCache]: Analyzing trace with hash 96004535, now seen corresponding path program 1 times [2020-12-03 12:30:32,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:32,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465690153] [2020-12-03 12:30:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:32,247 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 12:30:32,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465690153] [2020-12-03 12:30:32,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:32,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:30:32,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288252201] [2020-12-03 12:30:32,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:32,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:32,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:32,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:32,252 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 6 states. [2020-12-03 12:30:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:32,333 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-12-03 12:30:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:30:32,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-03 12:30:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:32,335 INFO L225 Difference]: With dead ends: 69 [2020-12-03 12:30:32,335 INFO L226 Difference]: Without dead ends: 65 [2020-12-03 12:30:32,335 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 12:30:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-03 12:30:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-12-03 12:30:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-03 12:30:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-12-03 12:30:32,339 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2020-12-03 12:30:32,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:32,340 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-12-03 12:30:32,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-12-03 12:30:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-03 12:30:32,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:32,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:32,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-03 12:30:32,341 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.startErr17ASSERT_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 12:30:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1367432731, now seen corresponding path program 1 times [2020-12-03 12:30:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:32,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117664542] [2020-12-03 12:30:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:32,488 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 12:30:32,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117664542] [2020-12-03 12:30:32,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:32,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:30:32,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213244651] [2020-12-03 12:30:32,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:32,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:32,495 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-12-03 12:30:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:32,609 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-12-03 12:30:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:30:32,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-03 12:30:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:32,611 INFO L225 Difference]: With dead ends: 86 [2020-12-03 12:30:32,611 INFO L226 Difference]: Without dead ends: 84 [2020-12-03 12:30:32,611 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 12:30:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-03 12:30:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-12-03 12:30:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-03 12:30:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-03 12:30:32,620 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2020-12-03 12:30:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:32,621 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-03 12:30:32,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-03 12:30:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-03 12:30:32,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:32,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:32,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-03 12:30:32,623 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.startErr17ASSERT_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 12:30:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:32,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2046065374, now seen corresponding path program 1 times [2020-12-03 12:30:32,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:32,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063858562] [2020-12-03 12:30:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:32,661 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 12:30:32,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063858562] [2020-12-03 12:30:32,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:32,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:32,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761873655] [2020-12-03 12:30:32,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:32,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:32,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:32,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:32,664 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-12-03 12:30:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:32,699 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-12-03 12:30:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:32,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-03 12:30:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:32,700 INFO L225 Difference]: With dead ends: 61 [2020-12-03 12:30:32,700 INFO L226 Difference]: Without dead ends: 59 [2020-12-03 12:30:32,701 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 12:30:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-03 12:30:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-03 12:30:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-03 12:30:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-03 12:30:32,707 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2020-12-03 12:30:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:32,708 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-03 12:30:32,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:32,708 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-03 12:30:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-03 12:30:32,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:32,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:32,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-03 12:30:32,709 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.startErr17ASSERT_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 12:30:32,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:32,710 INFO L82 PathProgramCache]: Analyzing trace with hash 996486959, now seen corresponding path program 1 times [2020-12-03 12:30:32,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:32,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389496800] [2020-12-03 12:30:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:32,756 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 12:30:32,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389496800] [2020-12-03 12:30:32,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:32,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:30:32,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558807663] [2020-12-03 12:30:32,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:30:32,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:32,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:30:32,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:30:32,761 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 4 states. [2020-12-03 12:30:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:32,803 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-12-03 12:30:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:30:32,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-03 12:30:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:32,805 INFO L225 Difference]: With dead ends: 59 [2020-12-03 12:30:32,805 INFO L226 Difference]: Without dead ends: 55 [2020-12-03 12:30:32,805 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 12:30:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-03 12:30:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-03 12:30:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-03 12:30:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-03 12:30:32,810 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 16 [2020-12-03 12:30:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:32,812 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-03 12:30:32,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:30:32,813 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-03 12:30:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 12:30:32,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:32,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:30:32,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-03 12:30:32,814 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.startErr17ASSERT_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 12:30:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash 321012073, now seen corresponding path program 1 times [2020-12-03 12:30:32,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:32,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972144098] [2020-12-03 12:30:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:32,896 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 12:30:32,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972144098] [2020-12-03 12:30:32,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882117254] [2020-12-03 12:30:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/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 12:30:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:33,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 12:30:33,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:30:33,181 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 12:30:33,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:30:33,264 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-03 12:30:33,264 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:30:33,274 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 12:30:33,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474262804] [2020-12-03 12:30:33,302 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-03 12:30:33,303 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:30:33,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:30:33,317 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:30:33,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:30:33,949 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:30:34,201 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-12-03 12:30:34,364 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-03 12:30:34,563 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-03 12:30:34,776 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-03 12:30:35,004 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-12-03 12:30:35,280 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-12-03 12:30:35,939 WARN L197 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-12-03 12:30:36,165 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-03 12:30:36,528 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-03 12:30:36,790 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-03 12:30:37,205 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-03 12:30:37,207 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:30:37,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:30:37,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2020-12-03 12:30:37,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128744485] [2020-12-03 12:30:37,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 12:30:37,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:37,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 12:30:37,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-12-03 12:30:37,209 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 12 states. [2020-12-03 12:30:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:37,437 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2020-12-03 12:30:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 12:30:37,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-03 12:30:37,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:37,438 INFO L225 Difference]: With dead ends: 73 [2020-12-03 12:30:37,438 INFO L226 Difference]: Without dead ends: 69 [2020-12-03 12:30:37,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-12-03 12:30:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-03 12:30:37,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 44. [2020-12-03 12:30:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-03 12:30:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-12-03 12:30:37,443 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2020-12-03 12:30:37,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:37,444 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-12-03 12:30:37,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 12:30:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-12-03 12:30:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 12:30:37,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:37,444 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 12:30:37,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:30:37,645 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.startErr17ASSERT_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 12:30:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash 841443737, now seen corresponding path program 1 times [2020-12-03 12:30:37,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:37,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990064152] [2020-12-03 12:30:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:37,708 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 12:30:37,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990064152] [2020-12-03 12:30:37,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:37,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 12:30:37,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799944429] [2020-12-03 12:30:37,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:30:37,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:37,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:30:37,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-03 12:30:37,710 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2020-12-03 12:30:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:37,798 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-12-03 12:30:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:30:37,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-03 12:30:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:37,800 INFO L225 Difference]: With dead ends: 59 [2020-12-03 12:30:37,800 INFO L226 Difference]: Without dead ends: 57 [2020-12-03 12:30:37,800 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 12:30:37,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-03 12:30:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-12-03 12:30:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-03 12:30:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-12-03 12:30:37,805 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 17 [2020-12-03 12:30:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:37,805 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-12-03 12:30:37,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:30:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-12-03 12:30:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 12:30:37,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:37,809 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 12:30:37,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-03 12:30:37,809 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.startErr17ASSERT_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 12:30:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:37,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1969266840, now seen corresponding path program 1 times [2020-12-03 12:30:37,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:37,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432439399] [2020-12-03 12:30:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:37,872 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 12:30:37,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432439399] [2020-12-03 12:30:37,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:37,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-03 12:30:37,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633078472] [2020-12-03 12:30:37,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 12:30:37,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 12:30:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:30:37,875 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-12-03 12:30:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:37,946 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-12-03 12:30:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 12:30:37,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-03 12:30:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:37,948 INFO L225 Difference]: With dead ends: 51 [2020-12-03 12:30:37,948 INFO L226 Difference]: Without dead ends: 49 [2020-12-03 12:30:37,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:30:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-03 12:30:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2020-12-03 12:30:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-03 12:30:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-12-03 12:30:37,955 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2020-12-03 12:30:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:37,955 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-12-03 12:30:37,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 12:30:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-12-03 12:30:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 12:30:37,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:30:37,956 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 12:30:37,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-03 12:30:37,957 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.startErr17ASSERT_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 12:30:37,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:30:37,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1915825760, now seen corresponding path program 1 times [2020-12-03 12:30:37,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:30:37,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870693928] [2020-12-03 12:30:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:30:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:30:38,025 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 12:30:38,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870693928] [2020-12-03 12:30:38,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:30:38,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-03 12:30:38,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804180562] [2020-12-03 12:30:38,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 12:30:38,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:30:38,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 12:30:38,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:30:38,028 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2020-12-03 12:30:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:30:38,090 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-12-03 12:30:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:30:38,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-03 12:30:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:30:38,091 INFO L225 Difference]: With dead ends: 34 [2020-12-03 12:30:38,091 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:30:38,092 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 12:30:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:30:38,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:30:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:30:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:30:38,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-03 12:30:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:30:38,093 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:30:38,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 12:30:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:30:38,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:30:38,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-03 12:30:38,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:30:38,470 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-12-03 12:30:38,759 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-12-03 12:30:38,761 INFO L262 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-12-03 12:30:38,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-12-03 12:30:38,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2020-12-03 12:30:38,761 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-12-03 12:30:38,761 INFO L262 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point L366(line 366) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point L333(line 333) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 297) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 126) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point L309(line 309) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2020-12-03 12:30:38,762 INFO L265 CegarLoopResult]: At program point L400(lines 15 402) the Hoare annotation is: true [2020-12-03 12:30:38,762 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2020-12-03 12:30:38,763 INFO L262 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2020-12-03 12:30:38,763 INFO L258 CegarLoopResult]: At program point L384(lines 282 391) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 .cse1) (and .cse3 (<= 1 ULTIMATE.start_main_~main__t~0))))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1 .cse2) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 1) .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~18 0)) .cse2)))) [2020-12-03 12:30:38,763 INFO L258 CegarLoopResult]: At program point L351(lines 32 395) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (let ((.cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0))) (.cse1 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)))) (or (and .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 0)) .cse1) (and .cse0 .cse1 (<= ULTIMATE.start_main_~main__t~0 1)))) (<= 1 ULTIMATE.start_main_~main__t~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1)) (and (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0))) [2020-12-03 12:30:38,763 INFO L262 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2020-12-03 12:30:38,763 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 278) no Hoare annotation was computed. [2020-12-03 12:30:38,763 INFO L262 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2020-12-03 12:30:38,763 INFO L262 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2020-12-03 12:30:38,763 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2020-12-03 12:30:38,763 INFO L262 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point L236(line 236) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 333) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L258 CegarLoopResult]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point L278(line 278) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 378) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2020-12-03 12:30:38,764 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L188(line 188) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L378(line 378) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L345(line 345) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 366) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 188) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2020-12-03 12:30:38,765 INFO L262 CegarLoopResult]: For program point L297(line 297) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 176) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L265 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-12-03 12:30:38,766 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 236) no Hoare annotation was computed. [2020-12-03 12:30:38,767 INFO L258 CegarLoopResult]: At program point L249(lines 101 251) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2020-12-03 12:30:38,767 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 84) no Hoare annotation was computed. [2020-12-03 12:30:38,767 INFO L262 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-12-03 12:30:38,767 INFO L262 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2020-12-03 12:30:38,767 INFO L262 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-12-03 12:30:38,767 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 309) no Hoare annotation was computed. [2020-12-03 12:30:38,767 INFO L262 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2020-12-03 12:30:38,767 INFO L262 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2020-12-03 12:30:38,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:30:38 BoogieIcfgContainer [2020-12-03 12:30:38,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:30:38,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:30:38,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:30:38,807 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:30:38,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:30:28" (3/4) ... [2020-12-03 12:30:38,810 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:30:38,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-03 12:30:38,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:30:38,833 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:30:38,834 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:30:38,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0175dc98-79d0-4d21-9504-294a08245aec/bin/utaipan/witness.graphml [2020-12-03 12:30:38,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:30:38,930 INFO L168 Benchmark]: Toolchain (without parser) took 11497.26 ms. Allocated memory was 90.2 MB in the beginning and 192.9 MB in the end (delta: 102.8 MB). Free memory was 55.7 MB in the beginning and 150.4 MB in the end (delta: -94.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:38,930 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:38,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.96 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 61.4 MB in the end (delta: -5.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:38,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.23 ms. Allocated memory is still 90.2 MB. Free memory was 61.4 MB in the beginning and 59.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:38,931 INFO L168 Benchmark]: Boogie Preprocessor took 28.71 ms. Allocated memory is still 90.2 MB. Free memory was 59.3 MB in the beginning and 58.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:30:38,932 INFO L168 Benchmark]: RCFGBuilder took 696.04 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.9 MB in the beginning and 71.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:38,933 INFO L168 Benchmark]: TraceAbstraction took 10129.78 ms. Allocated memory was 109.1 MB in the beginning and 192.9 MB in the end (delta: 83.9 MB). Free memory was 71.5 MB in the beginning and 156.7 MB in the end (delta: -85.2 MB). Peak memory consumption was 99.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:38,933 INFO L168 Benchmark]: Witness Printer took 122.43 ms. Allocated memory is still 192.9 MB. Free memory was 156.7 MB in the beginning and 150.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 12:30:38,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.96 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 61.4 MB in the end (delta: -5.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.23 ms. Allocated memory is still 90.2 MB. Free memory was 61.4 MB in the beginning and 59.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.71 ms. Allocated memory is still 90.2 MB. Free memory was 59.3 MB in the beginning and 58.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 696.04 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.9 MB in the beginning and 71.9 MB in the end (delta: -14.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10129.78 ms. Allocated memory was 109.1 MB in the beginning and 192.9 MB in the end (delta: 83.9 MB). Free memory was 71.5 MB in the beginning and 156.7 MB in the end (delta: -85.2 MB). Peak memory consumption was 99.9 MB. Max. memory is 16.1 GB. * Witness Printer took 122.43 ms. Allocated memory is still 192.9 MB. Free memory was 156.7 MB in the beginning and 150.4 MB in the end (delta: 6.3 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: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 188]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 176]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 366]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 378]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 84]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 297]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 126]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 142]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 154]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 236]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 309]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 278]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 224]: 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 18 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: (((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && 0 < main__tagbuf_len) && main__t == 0) && __VERIFIER_assert__cond == 1) || ((((main__t < main__tagbuf_len && __VERIFIER_assert__cond == 1) && ((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t))) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((main__t < main__tagbuf_len && (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && main__t <= 1))) && 1 <= main__t) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) || (0 < main__tagbuf_len && main__t == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 22, TraceHistogramMax: 2, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 973 SDtfs, 1434 SDslu, 1466 SDs, 0 SdLazy, 1724 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 22 MinimizatonAttempts, 436 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 122 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1331350 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 345243 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 12180 SizeOfPredicates, 8 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 24 InterpolantComputations, 21 PerfectInterpolantSequences, 6/9 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...