./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-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_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/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 e45e933f699aab7bcc9592c7af081e2fbc1238f5 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:47:12,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:47:12,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:47:12,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:47:12,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:47:12,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:47:12,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:47:12,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:47:12,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:47:12,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:47:12,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:47:12,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:47:12,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:47:12,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:47:12,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:47:13,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:47:13,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:47:13,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:47:13,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:47:13,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:47:13,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:47:13,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:47:13,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:47:13,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:47:13,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:47:13,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:47:13,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:47:13,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:47:13,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:47:13,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:47:13,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:47:13,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:47:13,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:47:13,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:47:13,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:47:13,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:47:13,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:47:13,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:47:13,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:47:13,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:47:13,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:47:13,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 15:47:13,036 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:47:13,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:47:13,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:47:13,037 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:47:13,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:47:13,037 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:47:13,037 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:47:13,037 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:47:13,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:47:13,038 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:47:13,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:47:13,038 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:47:13,038 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:47:13,038 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:47:13,038 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:47:13,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:47:13,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:47:13,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:47:13,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:47:13,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:47:13,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:47:13,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:47:13,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:47:13,040 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:47:13,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:47:13,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:47:13,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:47:13,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:47:13,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:47:13,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:47:13,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:47:13,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:47:13,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:47:13,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:47:13,041 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:47:13,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:47:13,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:47:13,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:47:13,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:47:13,042 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45e933f699aab7bcc9592c7af081e2fbc1238f5 [2020-12-09 15:47:13,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:47:13,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:47:13,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:47:13,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:47:13,253 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:47:13,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-12-09 15:47:13,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/data/f1aa7c150/d9079ce28c8849b68ce3e7cbfb6e3771/FLAG05a3b2465 [2020-12-09 15:47:13,669 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:47:13,669 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-12-09 15:47:13,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/data/f1aa7c150/d9079ce28c8849b68ce3e7cbfb6e3771/FLAG05a3b2465 [2020-12-09 15:47:13,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/data/f1aa7c150/d9079ce28c8849b68ce3e7cbfb6e3771 [2020-12-09 15:47:13,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:47:13,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:47:13,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:47:13,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:47:13,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:47:13,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:13,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559f3af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13, skipping insertion in model container [2020-12-09 15:47:13,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:13,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:47:13,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:47:13,844 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2020-12-09 15:47:13,848 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2020-12-09 15:47:13,851 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2020-12-09 15:47:13,853 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2020-12-09 15:47:13,856 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2020-12-09 15:47:13,858 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2020-12-09 15:47:13,861 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2020-12-09 15:47:13,863 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2020-12-09 15:47:13,866 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2020-12-09 15:47:13,868 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2020-12-09 15:47:13,871 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2020-12-09 15:47:13,873 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2020-12-09 15:47:13,875 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2020-12-09 15:47:13,877 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2020-12-09 15:47:13,880 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2020-12-09 15:47:13,882 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2020-12-09 15:47:13,884 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2020-12-09 15:47:13,886 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2020-12-09 15:47:13,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:47:13,897 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:47:13,912 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2020-12-09 15:47:13,913 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2020-12-09 15:47:13,915 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2020-12-09 15:47:13,916 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2020-12-09 15:47:13,918 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2020-12-09 15:47:13,919 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2020-12-09 15:47:13,922 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2020-12-09 15:47:13,923 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2020-12-09 15:47:13,926 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2020-12-09 15:47:13,927 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2020-12-09 15:47:13,929 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2020-12-09 15:47:13,931 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2020-12-09 15:47:13,933 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2020-12-09 15:47:13,935 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2020-12-09 15:47:13,937 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2020-12-09 15:47:13,939 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2020-12-09 15:47:13,941 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2020-12-09 15:47:13,942 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_ac27952d-19de-4ad6-83b7-161a27e98ab8/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2020-12-09 15:47:13,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:47:13,953 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:47:13,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13 WrapperNode [2020-12-09 15:47:13,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:47:13,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:47:13,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:47:13,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:47:13,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:13,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:13,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:47:13,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:47:13,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:47:13,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:47:14,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:14,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:14,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:14,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:14,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:14,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:14,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... [2020-12-09 15:47:14,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:47:14,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:47:14,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:47:14,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:47:14,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/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 [2020-12-09 15:47:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 15:47:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:47:14,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:47:14,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:47:14,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:47:14,353 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 15:47:14,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:14 BoogieIcfgContainer [2020-12-09 15:47:14,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:47:14,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:47:14,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:47:14,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:47:14,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:47:13" (1/3) ... [2020-12-09 15:47:14,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c821280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:47:14, skipping insertion in model container [2020-12-09 15:47:14,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:47:13" (2/3) ... [2020-12-09 15:47:14,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c821280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:47:14, skipping insertion in model container [2020-12-09 15:47:14,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:14" (3/3) ... [2020-12-09 15:47:14,361 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-12-09 15:47:14,370 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:47:14,373 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-12-09 15:47:14,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-12-09 15:47:14,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:47:14,400 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:47:14,401 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:47:14,401 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:47:14,401 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:47:14,401 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:47:14,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:47:14,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:47:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-12-09 15:47:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 15:47:14,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:14,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:14,422 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]=== [2020-12-09 15:47:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:14,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1091334804, now seen corresponding path program 1 times [2020-12-09 15:47:14,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:14,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648655191] [2020-12-09 15:47:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:14,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648655191] [2020-12-09 15:47:14,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:14,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:47:14,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925704654] [2020-12-09 15:47:14,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:47:14,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:14,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:47:14,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:47:14,567 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-12-09 15:47:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:14,593 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2020-12-09 15:47:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:47:14,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-09 15:47:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:14,600 INFO L225 Difference]: With dead ends: 84 [2020-12-09 15:47:14,601 INFO L226 Difference]: Without dead ends: 75 [2020-12-09 15:47:14,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:47:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-09 15:47:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-12-09 15:47:14,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-09 15:47:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-09 15:47:14,629 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 14 [2020-12-09 15:47:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:14,630 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-09 15:47:14,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:47:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-09 15:47:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 15:47:14,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:14,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:14,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 15:47:14,631 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]=== [2020-12-09 15:47:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:14,631 INFO L82 PathProgramCache]: Analyzing trace with hash 528363536, now seen corresponding path program 1 times [2020-12-09 15:47:14,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:14,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873294063] [2020-12-09 15:47:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:14,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873294063] [2020-12-09 15:47:14,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:14,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 15:47:14,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108066255] [2020-12-09 15:47:14,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:47:14,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:14,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:47:14,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:47:14,686 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 6 states. [2020-12-09 15:47:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:14,755 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-12-09 15:47:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:47:14,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 15:47:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:14,757 INFO L225 Difference]: With dead ends: 75 [2020-12-09 15:47:14,757 INFO L226 Difference]: Without dead ends: 73 [2020-12-09 15:47:14,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:47:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-09 15:47:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-09 15:47:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-09 15:47:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-12-09 15:47:14,764 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 15 [2020-12-09 15:47:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:14,764 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-12-09 15:47:14,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:47:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-12-09 15:47:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 15:47:14,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:14,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:14,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 15:47:14,765 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]=== [2020-12-09 15:47:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash 951344371, now seen corresponding path program 1 times [2020-12-09 15:47:14,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:14,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877430190] [2020-12-09 15:47:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:14,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877430190] [2020-12-09 15:47:14,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:14,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:47:14,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54550366] [2020-12-09 15:47:14,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:47:14,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:14,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:47:14,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:47:14,819 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 4 states. [2020-12-09 15:47:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:14,867 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2020-12-09 15:47:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:14,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 15:47:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:14,868 INFO L225 Difference]: With dead ends: 96 [2020-12-09 15:47:14,868 INFO L226 Difference]: Without dead ends: 94 [2020-12-09 15:47:14,868 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 [2020-12-09 15:47:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-09 15:47:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2020-12-09 15:47:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-09 15:47:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2020-12-09 15:47:14,875 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 17 [2020-12-09 15:47:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:14,875 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2020-12-09 15:47:14,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:47:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2020-12-09 15:47:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 15:47:14,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:14,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:14,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 15:47:14,876 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]=== [2020-12-09 15:47:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash -573091462, now seen corresponding path program 1 times [2020-12-09 15:47:14,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:14,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418109786] [2020-12-09 15:47:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:14,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418109786] [2020-12-09 15:47:14,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:14,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:14,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403078933] [2020-12-09 15:47:14,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:14,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:14,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:14,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:14,914 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 5 states. [2020-12-09 15:47:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:14,964 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-12-09 15:47:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:14,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 15:47:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:14,966 INFO L225 Difference]: With dead ends: 71 [2020-12-09 15:47:14,966 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 15:47:14,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 15:47:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-09 15:47:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 15:47:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-12-09 15:47:14,974 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 18 [2020-12-09 15:47:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:14,975 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-12-09 15:47:14,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-12-09 15:47:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 15:47:14,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:14,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:14,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 15:47:14,976 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]=== [2020-12-09 15:47:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash -468627622, now seen corresponding path program 1 times [2020-12-09 15:47:14,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:14,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468542721] [2020-12-09 15:47:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:15,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468542721] [2020-12-09 15:47:15,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:15,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:15,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435859778] [2020-12-09 15:47:15,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:15,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:15,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:15,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:15,038 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 5 states. [2020-12-09 15:47:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:15,151 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2020-12-09 15:47:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:47:15,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-09 15:47:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:15,152 INFO L225 Difference]: With dead ends: 136 [2020-12-09 15:47:15,153 INFO L226 Difference]: Without dead ends: 134 [2020-12-09 15:47:15,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:47:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-09 15:47:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-12-09 15:47:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-09 15:47:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-12-09 15:47:15,161 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 21 [2020-12-09 15:47:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:15,162 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-12-09 15:47:15,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-12-09 15:47:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 15:47:15,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:15,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:15,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 15:47:15,163 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]=== [2020-12-09 15:47:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:15,164 INFO L82 PathProgramCache]: Analyzing trace with hash -464459857, now seen corresponding path program 1 times [2020-12-09 15:47:15,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:15,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708523153] [2020-12-09 15:47:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:15,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708523153] [2020-12-09 15:47:15,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:15,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:15,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187786228] [2020-12-09 15:47:15,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:15,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:15,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:15,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:15,215 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 5 states. [2020-12-09 15:47:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:15,310 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2020-12-09 15:47:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:47:15,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-09 15:47:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:15,311 INFO L225 Difference]: With dead ends: 103 [2020-12-09 15:47:15,311 INFO L226 Difference]: Without dead ends: 101 [2020-12-09 15:47:15,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:47:15,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-09 15:47:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2020-12-09 15:47:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-09 15:47:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-12-09 15:47:15,321 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 21 [2020-12-09 15:47:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:15,321 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-12-09 15:47:15,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-12-09 15:47:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 15:47:15,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:15,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:15,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 15:47:15,323 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]=== [2020-12-09 15:47:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:15,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1642550139, now seen corresponding path program 1 times [2020-12-09 15:47:15,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:15,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796750184] [2020-12-09 15:47:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:15,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796750184] [2020-12-09 15:47:15,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:15,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882167565] [2020-12-09 15:47:15,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:15,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:15,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:15,367 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 5 states. [2020-12-09 15:47:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:15,452 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2020-12-09 15:47:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:15,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 15:47:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:15,453 INFO L225 Difference]: With dead ends: 116 [2020-12-09 15:47:15,453 INFO L226 Difference]: Without dead ends: 114 [2020-12-09 15:47:15,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-12-09 15:47:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 72. [2020-12-09 15:47:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-09 15:47:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-12-09 15:47:15,460 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 22 [2020-12-09 15:47:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:15,460 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-12-09 15:47:15,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-12-09 15:47:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 15:47:15,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:15,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:15,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 15:47:15,462 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]=== [2020-12-09 15:47:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1513349547, now seen corresponding path program 1 times [2020-12-09 15:47:15,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:15,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337373431] [2020-12-09 15:47:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:15,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337373431] [2020-12-09 15:47:15,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:15,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:15,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417657947] [2020-12-09 15:47:15,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:15,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:15,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:15,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:15,508 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 5 states. [2020-12-09 15:47:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:15,566 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-12-09 15:47:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:15,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-09 15:47:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:15,567 INFO L225 Difference]: With dead ends: 72 [2020-12-09 15:47:15,567 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 15:47:15,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 15:47:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-09 15:47:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 15:47:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2020-12-09 15:47:15,573 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 22 [2020-12-09 15:47:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:15,573 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2020-12-09 15:47:15,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2020-12-09 15:47:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 15:47:15,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:15,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:15,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 15:47:15,575 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]=== [2020-12-09 15:47:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1665131132, now seen corresponding path program 1 times [2020-12-09 15:47:15,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:15,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436069956] [2020-12-09 15:47:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:15,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436069956] [2020-12-09 15:47:15,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:15,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 15:47:15,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915750948] [2020-12-09 15:47:15,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:47:15,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:15,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:47:15,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:47:15,603 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 3 states. [2020-12-09 15:47:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:15,634 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2020-12-09 15:47:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:47:15,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-09 15:47:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:15,635 INFO L225 Difference]: With dead ends: 110 [2020-12-09 15:47:15,635 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 15:47:15,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:47:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 15:47:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-09 15:47:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 15:47:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-12-09 15:47:15,640 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 24 [2020-12-09 15:47:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:15,640 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-12-09 15:47:15,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:47:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-12-09 15:47:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 15:47:15,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:15,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:15,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 15:47:15,641 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]=== [2020-12-09 15:47:15,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:15,641 INFO L82 PathProgramCache]: Analyzing trace with hash -649021887, now seen corresponding path program 1 times [2020-12-09 15:47:15,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:15,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867440718] [2020-12-09 15:47:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 15:47:15,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867440718] [2020-12-09 15:47:15,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832214320] [2020-12-09 15:47:15,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/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 [2020-12-09 15:47:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:15,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 15:47:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:47:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 15:47:15,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:47:15,808 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 15:47:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 15:47:15,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1594457744] [2020-12-09 15:47:15,856 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2020-12-09 15:47:15,857 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 15:47:15,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 15:47:15,866 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 15:47:15,867 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 15:47:16,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 15:47:16,114 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 15:47:16,262 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 15:47:16,558 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-12-09 15:47:16,688 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 15:47:17,431 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-12-09 15:47:17,573 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-12-09 15:47:17,719 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-12-09 15:47:17,874 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-12-09 15:47:18,039 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-12-09 15:47:18,228 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-12-09 15:47:18,446 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-12-09 15:47:18,668 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2020-12-09 15:47:18,947 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 87 [2020-12-09 15:47:19,213 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2020-12-09 15:47:19,772 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-12-09 15:47:20,047 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-12-09 15:47:20,049 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:47:20,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 15:47:20,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2020-12-09 15:47:20,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857530404] [2020-12-09 15:47:20,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:47:20,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:20,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:47:20,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-12-09 15:47:20,050 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 6 states. [2020-12-09 15:47:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:20,114 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2020-12-09 15:47:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:47:20,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-09 15:47:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:20,115 INFO L225 Difference]: With dead ends: 110 [2020-12-09 15:47:20,115 INFO L226 Difference]: Without dead ends: 108 [2020-12-09 15:47:20,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-12-09 15:47:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-09 15:47:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 67. [2020-12-09 15:47:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-09 15:47:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-12-09 15:47:20,118 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 25 [2020-12-09 15:47:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:20,118 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-12-09 15:47:20,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:47:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-12-09 15:47:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 15:47:20,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:20,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:20,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 15:47:20,321 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]=== [2020-12-09 15:47:20,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:20,323 INFO L82 PathProgramCache]: Analyzing trace with hash 535752363, now seen corresponding path program 1 times [2020-12-09 15:47:20,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:20,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192494077] [2020-12-09 15:47:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:20,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192494077] [2020-12-09 15:47:20,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:20,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:20,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692757591] [2020-12-09 15:47:20,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:20,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:20,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:20,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:20,372 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 5 states. [2020-12-09 15:47:20,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:20,420 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2020-12-09 15:47:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:47:20,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-09 15:47:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:20,421 INFO L225 Difference]: With dead ends: 68 [2020-12-09 15:47:20,421 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 15:47:20,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 15:47:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-12-09 15:47:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 15:47:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-12-09 15:47:20,425 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 25 [2020-12-09 15:47:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:20,425 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-12-09 15:47:20,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-12-09 15:47:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 15:47:20,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:20,427 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:20,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-09 15:47:20,427 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]=== [2020-12-09 15:47:20,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:20,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1351309273, now seen corresponding path program 1 times [2020-12-09 15:47:20,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:20,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439263413] [2020-12-09 15:47:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 15:47:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439263413] [2020-12-09 15:47:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780709877] [2020-12-09 15:47:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:47:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:20,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 15:47:20,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:47:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:20,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:47:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:20,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051844738] [2020-12-09 15:47:20,643 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2020-12-09 15:47:20,643 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 15:47:20,643 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 15:47:20,643 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 15:47:20,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 15:47:20,767 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 15:47:20,777 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 15:47:20,880 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 15:47:21,118 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-12-09 15:47:22,003 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-12-09 15:47:22,150 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-12-09 15:47:22,463 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-12-09 15:47:22,637 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-12-09 15:47:22,835 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-12-09 15:47:23,058 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-12-09 15:47:23,275 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2020-12-09 15:47:23,525 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 87 [2020-12-09 15:47:23,812 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2020-12-09 15:47:24,371 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-12-09 15:47:24,669 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-12-09 15:47:25,023 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-12-09 15:47:25,024 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:47:25,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 15:47:25,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2020-12-09 15:47:25,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359068108] [2020-12-09 15:47:25,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 15:47:25,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 15:47:25,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2020-12-09 15:47:25,026 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 14 states. [2020-12-09 15:47:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,188 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-12-09 15:47:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 15:47:25,189 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-12-09 15:47:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,189 INFO L225 Difference]: With dead ends: 66 [2020-12-09 15:47:25,189 INFO L226 Difference]: Without dead ends: 64 [2020-12-09 15:47:25,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2020-12-09 15:47:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-09 15:47:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-12-09 15:47:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 15:47:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-12-09 15:47:25,192 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 26 [2020-12-09 15:47:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,192 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-12-09 15:47:25,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 15:47:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-12-09 15:47:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 15:47:25,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-09 15:47:25,394 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]=== [2020-12-09 15:47:25,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,394 INFO L82 PathProgramCache]: Analyzing trace with hash -571541778, now seen corresponding path program 1 times [2020-12-09 15:47:25,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121540630] [2020-12-09 15:47:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121540630] [2020-12-09 15:47:25,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:25,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815857403] [2020-12-09 15:47:25,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:25,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:25,419 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 5 states. [2020-12-09 15:47:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,456 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-12-09 15:47:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:25,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-09 15:47:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,456 INFO L225 Difference]: With dead ends: 59 [2020-12-09 15:47:25,456 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 15:47:25,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 15:47:25,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-09 15:47:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-09 15:47:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-12-09 15:47:25,459 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 26 [2020-12-09 15:47:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,459 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-12-09 15:47:25,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:25,459 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-12-09 15:47:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 15:47:25,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-09 15:47:25,459 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]=== [2020-12-09 15:47:25,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1546681483, now seen corresponding path program 1 times [2020-12-09 15:47:25,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6351911] [2020-12-09 15:47:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6351911] [2020-12-09 15:47:25,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:25,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455570576] [2020-12-09 15:47:25,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:25,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:25,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:25,488 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2020-12-09 15:47:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,525 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-12-09 15:47:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:47:25,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-09 15:47:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,525 INFO L225 Difference]: With dead ends: 58 [2020-12-09 15:47:25,525 INFO L226 Difference]: Without dead ends: 56 [2020-12-09 15:47:25,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:25,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-09 15:47:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-12-09 15:47:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 15:47:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-12-09 15:47:25,528 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 29 [2020-12-09 15:47:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,528 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-12-09 15:47:25,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-12-09 15:47:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 15:47:25,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-09 15:47:25,528 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]=== [2020-12-09 15:47:25,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,529 INFO L82 PathProgramCache]: Analyzing trace with hash -702481542, now seen corresponding path program 1 times [2020-12-09 15:47:25,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240945887] [2020-12-09 15:47:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240945887] [2020-12-09 15:47:25,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 15:47:25,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019866200] [2020-12-09 15:47:25,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:47:25,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:47:25,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:47:25,555 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 6 states. [2020-12-09 15:47:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,612 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-12-09 15:47:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:47:25,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-12-09 15:47:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,613 INFO L225 Difference]: With dead ends: 66 [2020-12-09 15:47:25,613 INFO L226 Difference]: Without dead ends: 64 [2020-12-09 15:47:25,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 15:47:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-09 15:47:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2020-12-09 15:47:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 15:47:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-12-09 15:47:25,616 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 30 [2020-12-09 15:47:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,616 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-12-09 15:47:25,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:47:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-12-09 15:47:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 15:47:25,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-09 15:47:25,617 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]=== [2020-12-09 15:47:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1752072319, now seen corresponding path program 1 times [2020-12-09 15:47:25,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033215501] [2020-12-09 15:47:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033215501] [2020-12-09 15:47:25,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:25,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948366987] [2020-12-09 15:47:25,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:25,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:25,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:25,645 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-12-09 15:47:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,716 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-12-09 15:47:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:47:25,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-09 15:47:25,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,717 INFO L225 Difference]: With dead ends: 86 [2020-12-09 15:47:25,717 INFO L226 Difference]: Without dead ends: 84 [2020-12-09 15:47:25,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-09 15:47:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2020-12-09 15:47:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-09 15:47:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-12-09 15:47:25,720 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 33 [2020-12-09 15:47:25,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,720 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-12-09 15:47:25,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-12-09 15:47:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 15:47:25,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-09 15:47:25,721 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]=== [2020-12-09 15:47:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1520328763, now seen corresponding path program 1 times [2020-12-09 15:47:25,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093527036] [2020-12-09 15:47:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093527036] [2020-12-09 15:47:25,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:25,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116611666] [2020-12-09 15:47:25,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:25,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:25,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:25,749 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 5 states. [2020-12-09 15:47:25,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,810 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-12-09 15:47:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:25,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-09 15:47:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,810 INFO L225 Difference]: With dead ends: 56 [2020-12-09 15:47:25,810 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 15:47:25,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 15:47:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-09 15:47:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-09 15:47:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-09 15:47:25,813 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 34 [2020-12-09 15:47:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,813 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-09 15:47:25,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-09 15:47:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 15:47:25,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-09 15:47:25,814 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]=== [2020-12-09 15:47:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,814 INFO L82 PathProgramCache]: Analyzing trace with hash -746930072, now seen corresponding path program 1 times [2020-12-09 15:47:25,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078142770] [2020-12-09 15:47:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078142770] [2020-12-09 15:47:25,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 15:47:25,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272148671] [2020-12-09 15:47:25,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 15:47:25,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 15:47:25,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 15:47:25,835 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 4 states. [2020-12-09 15:47:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,854 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-12-09 15:47:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:25,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-09 15:47:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,855 INFO L225 Difference]: With dead ends: 65 [2020-12-09 15:47:25,855 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 15:47:25,856 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 [2020-12-09 15:47:25,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 15:47:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-12-09 15:47:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 15:47:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-12-09 15:47:25,858 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 36 [2020-12-09 15:47:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,858 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-12-09 15:47:25,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 15:47:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-12-09 15:47:25,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 15:47:25,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-09 15:47:25,859 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]=== [2020-12-09 15:47:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1679991539, now seen corresponding path program 1 times [2020-12-09 15:47:25,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090035940] [2020-12-09 15:47:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090035940] [2020-12-09 15:47:25,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:25,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573493036] [2020-12-09 15:47:25,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:25,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:25,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:25,882 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 5 states. [2020-12-09 15:47:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:25,903 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-12-09 15:47:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:25,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-09 15:47:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:25,904 INFO L225 Difference]: With dead ends: 61 [2020-12-09 15:47:25,904 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 15:47:25,904 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 [2020-12-09 15:47:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 15:47:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-12-09 15:47:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 15:47:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-09 15:47:25,907 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 37 [2020-12-09 15:47:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:25,907 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-09 15:47:25,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-09 15:47:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 15:47:25,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:25,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:25,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-09 15:47:25,908 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]=== [2020-12-09 15:47:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash -540125937, now seen corresponding path program 1 times [2020-12-09 15:47:25,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:25,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489080322] [2020-12-09 15:47:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:25,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489080322] [2020-12-09 15:47:25,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:25,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:25,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322601806] [2020-12-09 15:47:25,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:25,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:25,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:25,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:25,939 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 5 states. [2020-12-09 15:47:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:26,025 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-12-09 15:47:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 15:47:26,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-09 15:47:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:26,026 INFO L225 Difference]: With dead ends: 83 [2020-12-09 15:47:26,026 INFO L226 Difference]: Without dead ends: 81 [2020-12-09 15:47:26,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-09 15:47:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2020-12-09 15:47:26,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 15:47:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-12-09 15:47:26,029 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 38 [2020-12-09 15:47:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:26,029 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-12-09 15:47:26,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-12-09 15:47:26,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 15:47:26,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:26,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:26,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-09 15:47:26,032 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]=== [2020-12-09 15:47:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:26,033 INFO L82 PathProgramCache]: Analyzing trace with hash 435969364, now seen corresponding path program 1 times [2020-12-09 15:47:26,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:26,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577877868] [2020-12-09 15:47:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:26,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577877868] [2020-12-09 15:47:26,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:26,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:26,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315975235] [2020-12-09 15:47:26,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:26,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:26,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:26,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:26,067 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 5 states. [2020-12-09 15:47:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:26,122 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-09 15:47:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 15:47:26,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-09 15:47:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:26,122 INFO L225 Difference]: With dead ends: 68 [2020-12-09 15:47:26,122 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 15:47:26,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:47:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 15:47:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-12-09 15:47:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 15:47:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-12-09 15:47:26,125 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 39 [2020-12-09 15:47:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:26,125 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-12-09 15:47:26,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-12-09 15:47:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-09 15:47:26,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:26,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:26,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-09 15:47:26,126 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]=== [2020-12-09 15:47:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1372292551, now seen corresponding path program 1 times [2020-12-09 15:47:26,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:26,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773838337] [2020-12-09 15:47:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:26,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773838337] [2020-12-09 15:47:26,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869578426] [2020-12-09 15:47:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:47:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:26,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 15:47:26,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:47:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:26,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:47:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:47:26,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2021623020] [2020-12-09 15:47:26,307 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2020-12-09 15:47:26,307 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 15:47:26,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 15:47:26,308 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 15:47:26,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 15:47:26,426 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-12-09 15:47:26,477 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-12-09 15:47:26,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-12-09 15:47:26,758 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 15:47:26,892 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 15:47:27,128 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-12-09 15:47:28,047 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-12-09 15:47:28,209 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-12-09 15:47:28,409 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-12-09 15:47:28,637 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-12-09 15:47:28,855 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2020-12-09 15:47:29,107 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 87 [2020-12-09 15:47:29,383 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2020-12-09 15:47:29,771 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 96 [2020-12-09 15:47:30,107 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 98 [2020-12-09 15:47:30,459 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 104 [2020-12-09 15:47:30,844 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 110 [2020-12-09 15:47:31,403 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 116 [2020-12-09 15:47:31,833 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 120 [2020-12-09 15:47:32,219 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-09 15:47:32,486 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-12-09 15:47:32,959 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2020-12-09 15:47:33,552 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2020-12-09 15:47:34,106 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2020-12-09 15:47:34,659 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 136 [2020-12-09 15:47:35,247 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2020-12-09 15:47:35,829 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 134 [2020-12-09 15:47:35,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 15:47:35,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 6, 6] total 38 [2020-12-09 15:47:35,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344863947] [2020-12-09 15:47:35,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-09 15:47:35,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:35,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-09 15:47:35,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=1016, Unknown=0, NotChecked=0, Total=1406 [2020-12-09 15:47:35,940 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 32 states. [2020-12-09 15:47:36,712 WARN L197 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 130 [2020-12-09 15:47:37,343 WARN L197 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 138 [2020-12-09 15:47:37,978 WARN L197 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 142 [2020-12-09 15:47:38,669 WARN L197 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 147 [2020-12-09 15:47:39,355 WARN L197 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 151 [2020-12-09 15:47:40,078 WARN L197 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 155 [2020-12-09 15:47:40,840 WARN L197 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 153 [2020-12-09 15:47:41,416 WARN L197 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 145 [2020-12-09 15:47:42,004 WARN L197 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 15:47:42,609 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 153 [2020-12-09 15:47:43,270 WARN L197 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 158 [2020-12-09 15:47:43,794 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 129 [2020-12-09 15:47:44,511 WARN L197 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 157 [2020-12-09 15:47:45,210 WARN L197 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 155 [2020-12-09 15:47:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:45,279 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-12-09 15:47:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-09 15:47:45,280 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 39 [2020-12-09 15:47:45,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:45,281 INFO L225 Difference]: With dead ends: 114 [2020-12-09 15:47:45,281 INFO L226 Difference]: Without dead ends: 112 [2020-12-09 15:47:45,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 77 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=850, Invalid=1802, Unknown=0, NotChecked=0, Total=2652 [2020-12-09 15:47:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-09 15:47:45,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-12-09 15:47:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-09 15:47:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-12-09 15:47:45,287 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 39 [2020-12-09 15:47:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:45,288 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-12-09 15:47:45,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-09 15:47:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-12-09 15:47:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-09 15:47:45,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:45,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:45,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:47:45,490 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.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]=== [2020-12-09 15:47:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:45,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1929666322, now seen corresponding path program 1 times [2020-12-09 15:47:45,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:45,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072148434] [2020-12-09 15:47:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:47:45,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072148434] [2020-12-09 15:47:45,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111458530] [2020-12-09 15:47:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:47:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:45,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 15:47:45,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:47:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:47:45,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:47:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:47:45,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1298530242] [2020-12-09 15:47:45,685 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2020-12-09 15:47:45,685 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 15:47:45,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 15:47:45,686 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 15:47:45,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 15:47:45,767 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 15:47:45,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-12-09 15:47:46,004 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 15:47:46,574 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 126 [2020-12-09 15:47:46,699 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 15:47:47,080 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-12-09 15:47:47,235 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-12-09 15:47:47,391 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-12-09 15:47:47,555 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-12-09 15:47:47,725 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-12-09 15:47:47,896 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-12-09 15:47:48,074 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2020-12-09 15:47:48,260 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-12-09 15:47:48,494 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-12-09 15:47:48,744 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-12-09 15:47:48,984 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2020-12-09 15:47:49,256 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 87 [2020-12-09 15:47:49,579 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2020-12-09 15:47:49,907 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-09 15:47:50,219 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-12-09 15:47:50,544 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-12-09 15:47:50,742 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-09 15:47:50,951 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-12-09 15:47:51,321 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-12-09 15:47:51,816 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 15:47:52,238 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-09 15:47:52,797 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 104 [2020-12-09 15:47:53,305 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 113 [2020-12-09 15:47:53,823 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 119 [2020-12-09 15:47:54,344 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-12-09 15:47:54,889 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2020-12-09 15:47:55,486 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2020-12-09 15:47:56,143 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 136 [2020-12-09 15:47:56,773 WARN L197 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 136 [2020-12-09 15:47:57,390 WARN L197 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 134 [2020-12-09 15:47:57,391 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:47:57,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 15:47:57,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 8 [2020-12-09 15:47:57,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281724632] [2020-12-09 15:47:57,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 15:47:57,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 15:47:57,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1479, Unknown=0, NotChecked=0, Total=1806 [2020-12-09 15:47:57,393 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 8 states. [2020-12-09 15:47:57,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:57,519 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-12-09 15:47:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 15:47:57,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-09 15:47:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:57,520 INFO L225 Difference]: With dead ends: 79 [2020-12-09 15:47:57,520 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 15:47:57,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 89 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=374, Invalid=1788, Unknown=0, NotChecked=0, Total=2162 [2020-12-09 15:47:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 15:47:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2020-12-09 15:47:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-09 15:47:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-12-09 15:47:57,525 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 43 [2020-12-09 15:47:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:57,525 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-12-09 15:47:57,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 15:47:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-12-09 15:47:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-09 15:47:57,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:47:57,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:47:57,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:47:57,726 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-12-09 15:47:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:47:57,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1269390535, now seen corresponding path program 1 times [2020-12-09 15:47:57,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:47:57,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103773011] [2020-12-09 15:47:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:47:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:47:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 15:47:57,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103773011] [2020-12-09 15:47:57,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:47:57,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 15:47:57,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335718603] [2020-12-09 15:47:57,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 15:47:57,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:47:57,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 15:47:57,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 15:47:57,757 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 5 states. [2020-12-09 15:47:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:47:57,861 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-12-09 15:47:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 15:47:57,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-09 15:47:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:47:57,861 INFO L225 Difference]: With dead ends: 70 [2020-12-09 15:47:57,861 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:47:57,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:47:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:47:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:47:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:47:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:47:57,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-12-09 15:47:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:47:57,862 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:47:57,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 15:47:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:47:57,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:47:57,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-12-09 15:47:57,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 15:47:58,057 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 269 [2020-12-09 15:47:58,205 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 257 [2020-12-09 15:47:58,596 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2020-12-09 15:47:59,754 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 265 DAG size of output: 62 [2020-12-09 15:48:00,090 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2020-12-09 15:48:00,819 WARN L197 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 70 [2020-12-09 15:48:00,822 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2020-12-09 15:48:00,822 INFO L262 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-12-09 15:48:00,822 INFO L262 CegarLoopResult]: For program point L234(lines 234 338) no Hoare annotation was computed. [2020-12-09 15:48:00,822 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 272) no Hoare annotation was computed. [2020-12-09 15:48:00,822 INFO L262 CegarLoopResult]: For program point L135(lines 135 397) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point L284(line 284) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point L53(lines 53 433) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point L384(lines 384 393) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L258 CegarLoopResult]: At program point L401(lines 131 402) the Hoare annotation is: (let ((.cse0 (< ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0)) (.cse3 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1)) (.cse1 (let ((.cse4 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse5 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse6 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse4 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 1) .cse5 .cse6 .cse7) (and .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)) .cse5 .cse6 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0)) .cse7))))) (or (let ((.cse2 (select |#memory_int| |#t~string4.base|))) (and (<= ULTIMATE.start_main_~main__tokenlen~0 1000000) (<= ULTIMATE.start_main_~main__urilen~0 1000000) (= ~__return_375~0 0) .cse0 (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= 12 (select |#length| |#t~string6.base|)) .cse1 (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~main__scheme~0 1000000) (= 0 |#t~string4.offset|) (= 2 (select |#length| |#t~string4.base|)) (= 41 (select |#length| |#t~string5.base|)) (= |#NULL.base| 0) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse2 |#t~string4.offset|)) (< 0 ULTIMATE.start_main_~main__tokenlen~0) (= ~__return_main~0 0) (< |#StackHeapBarrier| |#t~string6.base|) .cse3 (< |#StackHeapBarrier| |#t~string4.base|) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse2 (+ |#t~string4.offset| 1)) 0))) (and .cse0 (= (+ ULTIMATE.start_main_~main__cp~0 1) ULTIMATE.start_main_~main__urilen~0) .cse3 .cse1))) [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point L104(lines 104 411) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point L71(lines 71 416) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point L253(lines 253 329) no Hoare annotation was computed. [2020-12-09 15:48:00,823 INFO L262 CegarLoopResult]: For program point L187(lines 187 355) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 386) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L270(lines 270 322) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L204(lines 204 353) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L386(line 386) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L155(lines 155 360) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L23(lines 23 438) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L189(line 189) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L123(lines 123 403) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 214) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L272(line 272) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L41(lines 41 435) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L372(lines 372 395) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L306(lines 306 316) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L224(lines 224 344) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point L59(lines 59 432) no Hoare annotation was computed. [2020-12-09 15:48:00,824 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L241(lines 241 331) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L175(lines 175 357) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 284) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 226) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L374(line 374) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L143(lines 143 362) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L226(line 226) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 145) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L61(lines 61 427) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L243(line 243) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L177(line 177) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point L111(lines 111 405) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-12-09 15:48:00,825 INFO L258 CegarLoopResult]: At program point L392(lines 129 403) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (<= ULTIMATE.start_main_~main__tokenlen~0 1000000) (<= ULTIMATE.start_main_~main__urilen~0 1000000) (= ~__return_375~0 0) (< ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~main__scheme~0 1000000) (= 0 |#t~string4.offset|) (= 2 (select |#length| |#t~string4.base|)) (= 41 (select |#length| |#t~string5.base|)) (= |#NULL.base| 0) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse0 |#t~string4.offset|)) (let ((.cse1 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse2 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse3 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1)) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)))) (or (and .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~16) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0)) .cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0))) (and .cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 1) .cse2 .cse3 .cse4 .cse5))) (< 0 ULTIMATE.start_main_~main__tokenlen~0) (= ~__return_main~0 0) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse0 (+ |#t~string4.offset| 1)) 0))) [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L194(lines 194 354) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L95(lines 95 412) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L29(lines 29 437) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L258 CegarLoopResult]: At program point L327(lines 262 328) the Hoare annotation is: (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 1) (let ((.cse0 (let ((.cse1 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 0))) (.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 0))) (.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 0))) (.cse5 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse6 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 0))) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0))) (.cse8 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 0))) (.cse9 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1)) (.cse11 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) (.cse12 (< (+ ULTIMATE.start_main_~main__cp~0 1) ULTIMATE.start_main_~main__urilen~0)) (.cse13 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~4 1))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= (+ ULTIMATE.start_main_~main__c~0 2) ULTIMATE.start_main_~main__tokenlen~0) .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 0)) .cse9 .cse10 .cse11 .cse12 .cse13))))) (or (and .cse0 (= ULTIMATE.start_main_~main__c~0 0)) (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)) (<= 1 ULTIMATE.start_main_~main__c~0) .cse0))) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 1)) [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L294(lines 294 318) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L162(lines 162 359) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L63(lines 63 422) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L258 CegarLoopResult]: At program point L410(lines 104 411) the Hoare annotation is: (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L212(lines 212 346) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L47(lines 47 434) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L262(lines 262 328) no Hoare annotation was computed. [2020-12-09 15:48:00,826 INFO L262 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 157) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 374) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point L65(lines 65 417) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point L214(line 214) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point L83(lines 83 414) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L258 CegarLoopResult]: At program point L315(lines 230 344) the Hoare annotation is: (let ((.cse13 (= ULTIMATE.start_main_~main__c~0 0)) (.cse0 (<= 1 ULTIMATE.start_main_~main__cp~0)) (.cse1 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 0))) (.cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 0))) (.cse3 (< 0 ULTIMATE.start_main_~main__scheme~0)) (.cse4 (< ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0)) (.cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 0))) (.cse6 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 1)) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 0))) (.cse8 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 0))) (.cse9 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 1)) (.cse11 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) (.cse12 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~4 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 1) .cse8 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 1) .cse9 .cse10 .cse11 (< (+ ULTIMATE.start_main_~main__cp~0 1) ULTIMATE.start_main_~main__urilen~0) .cse12 .cse13) (and (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~10) (let ((.cse14 (let ((.cse15 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 0))) (.cse16 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 0)))) (or (and .cse0 .cse1 .cse2 .cse15 .cse3 .cse4 .cse5 .cse6 .cse7 .cse16 .cse8 (<= (+ ULTIMATE.start_main_~main__c~0 2) ULTIMATE.start_main_~main__tokenlen~0) .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse2 .cse15 .cse3 .cse4 .cse5 .cse6 .cse7 .cse16 .cse8 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 0)) .cse9 .cse10 .cse11 .cse12))))) (or (and .cse14 .cse13) (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)) (<= 1 ULTIMATE.start_main_~main__c~0) .cse14)))))) [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 243) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point L282(lines 282 320) no Hoare annotation was computed. [2020-12-09 15:48:00,827 INFO L265 CegarLoopResult]: At program point L431(lines 13 439) the Hoare annotation is: true [2020-12-09 15:48:00,827 INFO L262 CegarLoopResult]: For program point L35(lines 35 436) no Hoare annotation was computed. [2020-12-09 15:48:00,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:48:00 BoogieIcfgContainer [2020-12-09 15:48:00,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:48:00,851 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:48:00,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:48:00,851 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:48:00,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:47:14" (3/4) ... [2020-12-09 15:48:00,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:48:00,862 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 15:48:00,863 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 15:48:00,863 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:48:00,863 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:48:00,909 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ac27952d-19de-4ad6-83b7-161a27e98ab8/bin/utaipan/witness.graphml [2020-12-09 15:48:00,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:48:00,910 INFO L168 Benchmark]: Toolchain (without parser) took 47221.67 ms. Allocated memory was 102.8 MB in the beginning and 195.0 MB in the end (delta: 92.3 MB). Free memory was 62.4 MB in the beginning and 160.7 MB in the end (delta: -98.2 MB). Peak memory consumption was 104.3 MB. Max. memory is 16.1 GB. [2020-12-09 15:48:00,910 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 102.8 MB. Free memory is still 78.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:48:00,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.71 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 70.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:48:00,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.11 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 68.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:48:00,911 INFO L168 Benchmark]: Boogie Preprocessor took 18.81 ms. Allocated memory is still 102.8 MB. Free memory was 68.8 MB in the beginning and 67.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:48:00,911 INFO L168 Benchmark]: RCFGBuilder took 341.61 ms. Allocated memory is still 102.8 MB. Free memory was 67.4 MB in the beginning and 58.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:48:00,911 INFO L168 Benchmark]: TraceAbstraction took 46494.66 ms. Allocated memory was 102.8 MB in the beginning and 195.0 MB in the end (delta: 92.3 MB). Free memory was 57.8 MB in the beginning and 55.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 16.1 GB. [2020-12-09 15:48:00,911 INFO L168 Benchmark]: Witness Printer took 57.93 ms. Allocated memory is still 195.0 MB. Free memory was 53.9 MB in the beginning and 160.7 MB in the end (delta: -106.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-12-09 15:48:00,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 102.8 MB. Free memory is still 78.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.71 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 70.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.11 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 68.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.81 ms. Allocated memory is still 102.8 MB. Free memory was 68.8 MB in the beginning and 67.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 341.61 ms. Allocated memory is still 102.8 MB. Free memory was 67.4 MB in the beginning and 58.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 46494.66 ms. Allocated memory was 102.8 MB in the beginning and 195.0 MB in the end (delta: 92.3 MB). Free memory was 57.8 MB in the beginning and 55.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.93 ms. Allocated memory is still 195.0 MB. Free memory was 53.9 MB in the beginning and 160.7 MB in the end (delta: -106.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 97]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 214]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 374]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 308]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 386]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 125]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 272]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 145]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 157]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 243]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 296]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 284]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 255]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 226]: 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: 129]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((main__tokenlen <= 1000000 && main__urilen <= 1000000) && __return_375 == 0) && main__cp < main__urilen) && \valid[0] == 0) && \valid["apache-escape-absolute.i.v+cfa-reducer.c"] == 1) && \valid["0"] == 1) && "apache-escape-absolute.i.v+cfa-reducer.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "apache-escape-absolute.i.v+cfa-reducer.c") && #NULL == 0) && main__scheme <= 1000000) && 0 == "0") && 2 == unknown-#length-unknown["0"]) && 41 == unknown-#length-unknown["apache-escape-absolute.i.v+cfa-reducer.c"]) && #NULL == 0) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && ((((((((1 <= main__cp && 0 < main__scheme) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((1 <= main__cp && __VERIFIER_assert__cond == 1) && 0 < main__scheme) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) && 0 < main__tokenlen) && __return_main == 0) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: (__VERIFIER_assert__cond == 1 && ((((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && __VERIFIER_assert__cond == 1) || (((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && __VERIFIER_assert__cond == 1)) && main__c == 0) || ((!(__VERIFIER_assert__cond == 0) && 1 <= main__c) && ((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && __VERIFIER_assert__cond == 1) || (((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && __VERIFIER_assert__cond == 1))))) && __VERIFIER_assert__cond == 1 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((main__tokenlen <= 1000000 && main__urilen <= 1000000) && __return_375 == 0) && main__cp < main__urilen) && \valid[0] == 0) && \valid["apache-escape-absolute.i.v+cfa-reducer.c"] == 1) && \valid["0"] == 1) && "apache-escape-absolute.i.v+cfa-reducer.c" == 0) && 12 == unknown-#length-unknown["reach_error"]) && (((((1 <= main__cp && __VERIFIER_assert__cond == 1) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) && unknown-#StackHeapBarrier-unknown < "apache-escape-absolute.i.v+cfa-reducer.c") && #NULL == 0) && main__scheme <= 1000000) && 0 == "0") && 2 == unknown-#length-unknown["0"]) && 41 == unknown-#length-unknown["apache-escape-absolute.i.v+cfa-reducer.c"]) && #NULL == 0) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && 0 < main__tokenlen) && __return_main == 0) && unknown-#StackHeapBarrier-unknown < "reach_error") && __VERIFIER_assert__cond == 1) && unknown-#StackHeapBarrier-unknown < "0") && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) || (((main__cp < main__urilen && main__cp + 1 == main__urilen) && __VERIFIER_assert__cond == 1) && (((((1 <= main__cp && __VERIFIER_assert__cond == 1) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)))) - InvariantResult [Line: 230]: Loop Invariant Derived loop invariant: ((((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && __VERIFIER_assert__cond == 1) && main__c == 0) || (1 <= __VERIFIER_assert__cond && ((((((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) || (((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1)) && main__c == 0) || ((!(__VERIFIER_assert__cond == 0) && 1 <= main__c) && ((((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__c + 2 <= main__tokenlen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) || (((((((((((((((1 <= main__cp && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1))))) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.4s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1229 SDtfs, 3394 SDslu, 1526 SDs, 0 SdLazy, 1435 SolverSat, 244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 582 GetRequests, 304 SyntacticMatches, 22 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 38.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 24 MinimizatonAttempts, 362 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 915 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1915438 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 6 FomulaSimplificationsInter, 167047 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 68721 SizeOfPredicates, 28 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 32 InterpolantComputations, 20 PerfectInterpolantSequences, 16/44 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: OVERALL_TIME[ms]: 451, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 35, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 41, TOOLS_POST_TIME[ms]: 97, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 41, TOOLS_QUANTIFIERELIM_TIME[ms]: 89, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 36, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 80, FLUID_YES_ANSWERS: 2, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 2, DOMAIN_ALPHA_TIME[ms]: 268, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 3, DOMAIN_ISBOTTOM_APPLICATIONS: 35, DOMAIN_ISBOTTOM_TIME[ms]: 69, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 29, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 29, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 0, DAG_COMPRESSION_TIME[ms]: 6, DAG_COMPRESSION_PROCESSED_NODES: 718, DAG_COMPRESSION_RETAINED_NODES: 85, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...