./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:19:05,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:19:05,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:19:05,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:19:05,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:19:05,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:19:05,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:19:05,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:19:05,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:19:05,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:19:05,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:19:05,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:19:05,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:19:05,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:19:05,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:19:05,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:19:05,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:19:05,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:19:05,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:19:05,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:19:05,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:19:05,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:19:05,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:19:05,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:19:05,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:19:05,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:19:05,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:19:05,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:19:05,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:19:05,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:19:05,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:19:05,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:19:05,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:19:05,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:19:05,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:19:05,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:19:05,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:19:05,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:19:05,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:19:05,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:19:05,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:19:05,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:19:05,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:19:05,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:19:05,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:19:05,421 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:19:05,421 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:19:05,421 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:19:05,422 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:19:05,422 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:19:05,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:19:05,422 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:19:05,422 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:19:05,422 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:19:05,422 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:19:05,423 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:19:05,423 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:19:05,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:19:05,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:19:05,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:19:05,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:19:05,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:19:05,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:19:05,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:19:05,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:19:05,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:19:05,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:19:05,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:19:05,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:19:05,425 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:19:05,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:19:05,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:19:05,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:19:05,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:19:05,426 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_6cddb41a-b995-47fc-a2ec-ae093c173959/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b57e964dbb610d8a39ef60225ec1dbb75ce4568 [2020-12-09 09:19:05,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:19:05,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:19:05,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:19:05,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:19:05,630 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:19:05,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-12-09 09:19:05,676 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/data/99a28079d/3982a173b48c495585450647312e4916/FLAG93e04090f [2020-12-09 09:19:06,049 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:19:06,049 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-12-09 09:19:06,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/data/99a28079d/3982a173b48c495585450647312e4916/FLAG93e04090f [2020-12-09 09:19:06,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/data/99a28079d/3982a173b48c495585450647312e4916 [2020-12-09 09:19:06,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:19:06,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:19:06,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:19:06,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:19:06,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:19:06,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55148262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06, skipping insertion in model container [2020-12-09 09:19:06,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:19:06,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:19:06,210 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2020-12-09 09:19:06,214 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2020-12-09 09:19:06,215 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2020-12-09 09:19:06,218 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2020-12-09 09:19:06,219 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2020-12-09 09:19:06,221 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2020-12-09 09:19:06,222 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2020-12-09 09:19:06,224 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2020-12-09 09:19:06,225 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2020-12-09 09:19:06,227 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2020-12-09 09:19:06,228 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2020-12-09 09:19:06,230 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2020-12-09 09:19:06,232 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2020-12-09 09:19:06,233 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2020-12-09 09:19:06,234 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2020-12-09 09:19:06,236 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2020-12-09 09:19:06,237 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2020-12-09 09:19:06,238 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2020-12-09 09:19:06,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:19:06,246 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:19:06,257 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2020-12-09 09:19:06,258 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2020-12-09 09:19:06,259 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2020-12-09 09:19:06,260 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2020-12-09 09:19:06,261 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2020-12-09 09:19:06,262 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2020-12-09 09:19:06,263 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2020-12-09 09:19:06,265 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2020-12-09 09:19:06,266 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2020-12-09 09:19:06,268 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2020-12-09 09:19:06,269 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2020-12-09 09:19:06,271 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2020-12-09 09:19:06,272 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2020-12-09 09:19:06,273 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2020-12-09 09:19:06,274 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2020-12-09 09:19:06,275 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2020-12-09 09:19:06,276 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2020-12-09 09:19:06,277 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_6cddb41a-b995-47fc-a2ec-ae093c173959/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2020-12-09 09:19:06,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:19:06,288 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:19:06,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06 WrapperNode [2020-12-09 09:19:06,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:19:06,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:19:06,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:19:06,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:19:06,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:19:06,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:19:06,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:19:06,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:19:06,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... [2020-12-09 09:19:06,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:19:06,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:19:06,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:19:06,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:19:06,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/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 09:19:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:19:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:19:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:19:06,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:19:06,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:19:06,715 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 09:19:06,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:19:06 BoogieIcfgContainer [2020-12-09 09:19:06,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:19:06,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:19:06,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:19:06,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:19:06,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:19:06" (1/3) ... [2020-12-09 09:19:06,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c19a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:19:06, skipping insertion in model container [2020-12-09 09:19:06,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:19:06" (2/3) ... [2020-12-09 09:19:06,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714c19a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:19:06, skipping insertion in model container [2020-12-09 09:19:06,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:19:06" (3/3) ... [2020-12-09 09:19:06,725 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-12-09 09:19:06,738 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:19:06,741 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-12-09 09:19:06,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-12-09 09:19:06,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:19:06,773 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:19:06,774 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:19:06,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:19:06,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:19:06,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:19:06,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:19:06,774 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:19:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-12-09 09:19:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 09:19:06,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:06,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:06,793 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 09:19:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash -101219053, now seen corresponding path program 1 times [2020-12-09 09:19:06,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:06,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200948364] [2020-12-09 09:19:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:06,957 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 09:19:06,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200948364] [2020-12-09 09:19:06,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:06,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:19:06,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835978891] [2020-12-09 09:19:06,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:19:06,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:06,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:19:06,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:19:06,973 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-12-09 09:19:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,071 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-12-09 09:19:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:07,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 09:19:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,079 INFO L225 Difference]: With dead ends: 118 [2020-12-09 09:19:07,079 INFO L226 Difference]: Without dead ends: 106 [2020-12-09 09:19:07,081 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 09:19:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-09 09:19:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2020-12-09 09:19:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 09:19:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-12-09 09:19:07,112 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 7 [2020-12-09 09:19:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,113 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-12-09 09:19:07,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:19:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-12-09 09:19:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 09:19:07,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:19:07,114 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 09:19:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash -104789997, now seen corresponding path program 1 times [2020-12-09 09:19:07,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942203222] [2020-12-09 09:19:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,156 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 09:19:07,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942203222] [2020-12-09 09:19:07,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:19:07,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630638556] [2020-12-09 09:19:07,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:19:07,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:19:07,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:19:07,158 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2020-12-09 09:19:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,205 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-12-09 09:19:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:07,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 09:19:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,207 INFO L225 Difference]: With dead ends: 106 [2020-12-09 09:19:07,207 INFO L226 Difference]: Without dead ends: 104 [2020-12-09 09:19:07,208 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 09:19:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-09 09:19:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2020-12-09 09:19:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-09 09:19:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-09 09:19:07,213 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 7 [2020-12-09 09:19:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,213 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-09 09:19:07,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:19:07,214 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-09 09:19:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:19:07,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:19:07,214 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 09:19:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,215 INFO L82 PathProgramCache]: Analyzing trace with hash -345778017, now seen corresponding path program 1 times [2020-12-09 09:19:07,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328292193] [2020-12-09 09:19:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,250 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 09:19:07,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328292193] [2020-12-09 09:19:07,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:19:07,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124623098] [2020-12-09 09:19:07,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:19:07,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:19:07,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:19:07,251 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-12-09 09:19:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,309 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-09 09:19:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:07,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 09:19:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,310 INFO L225 Difference]: With dead ends: 68 [2020-12-09 09:19:07,310 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 09:19:07,310 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 09:19:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 09:19:07,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-12-09 09:19:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 09:19:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-12-09 09:19:07,315 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 10 [2020-12-09 09:19:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,315 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-12-09 09:19:07,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:19:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-12-09 09:19:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:19:07,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 09:19:07,316 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 09:19:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,316 INFO L82 PathProgramCache]: Analyzing trace with hash 646297484, now seen corresponding path program 1 times [2020-12-09 09:19:07,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220495959] [2020-12-09 09:19:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,348 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 09:19:07,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220495959] [2020-12-09 09:19:07,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:19:07,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36700149] [2020-12-09 09:19:07,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:19:07,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:19:07,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:19:07,349 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-12-09 09:19:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,414 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-12-09 09:19:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:07,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 09:19:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,415 INFO L225 Difference]: With dead ends: 66 [2020-12-09 09:19:07,415 INFO L226 Difference]: Without dead ends: 64 [2020-12-09 09:19:07,416 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 09:19:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-09 09:19:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-12-09 09:19:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-09 09:19:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-09 09:19:07,421 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 10 [2020-12-09 09:19:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,422 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-09 09:19:07,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:19:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-09 09:19:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:19:07,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 09:19:07,423 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 09:19:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2129179748, now seen corresponding path program 1 times [2020-12-09 09:19:07,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495398249] [2020-12-09 09:19:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,457 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 09:19:07,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495398249] [2020-12-09 09:19:07,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:19:07,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069987035] [2020-12-09 09:19:07,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:19:07,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:19:07,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:19:07,459 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-12-09 09:19:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,495 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-09 09:19:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:19:07,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 09:19:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,496 INFO L225 Difference]: With dead ends: 64 [2020-12-09 09:19:07,497 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 09:19:07,497 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 09:19:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 09:19:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-09 09:19:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 09:19:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-09 09:19:07,503 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 11 [2020-12-09 09:19:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,503 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-09 09:19:07,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:19:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-09 09:19:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:19:07,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 09:19:07,504 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 09:19:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2128691176, now seen corresponding path program 1 times [2020-12-09 09:19:07,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791554351] [2020-12-09 09:19:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,543 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 09:19:07,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791554351] [2020-12-09 09:19:07,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:19:07,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585013359] [2020-12-09 09:19:07,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:19:07,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:19:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:19:07,545 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2020-12-09 09:19:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,630 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-09 09:19:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:07,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 09:19:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,632 INFO L225 Difference]: With dead ends: 94 [2020-12-09 09:19:07,632 INFO L226 Difference]: Without dead ends: 92 [2020-12-09 09:19:07,632 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 09:19:07,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-09 09:19:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-12-09 09:19:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-09 09:19:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-12-09 09:19:07,636 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 11 [2020-12-09 09:19:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,636 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-12-09 09:19:07,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:19:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-12-09 09:19:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:19:07,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 09:19:07,637 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 09:19:07,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2128675288, now seen corresponding path program 1 times [2020-12-09 09:19:07,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131141685] [2020-12-09 09:19:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,671 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 09:19:07,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131141685] [2020-12-09 09:19:07,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:19:07,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108288197] [2020-12-09 09:19:07,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:19:07,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:19:07,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:19:07,673 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2020-12-09 09:19:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,781 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-09 09:19:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:07,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 09:19:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,782 INFO L225 Difference]: With dead ends: 99 [2020-12-09 09:19:07,782 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 09:19:07,783 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 09:19:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 09:19:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 54. [2020-12-09 09:19:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-09 09:19:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-09 09:19:07,788 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-12-09 09:19:07,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,788 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-09 09:19:07,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:19:07,788 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-09 09:19:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:19:07,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 09:19:07,789 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 09:19:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1439610404, now seen corresponding path program 1 times [2020-12-09 09:19:07,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800797415] [2020-12-09 09:19:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,820 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 09:19:07,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800797415] [2020-12-09 09:19:07,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:19:07,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826861652] [2020-12-09 09:19:07,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:19:07,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:19:07,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:19:07,822 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2020-12-09 09:19:07,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:07,858 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-09 09:19:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:19:07,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 09:19:07,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:07,859 INFO L225 Difference]: With dead ends: 56 [2020-12-09 09:19:07,859 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 09:19:07,859 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 09:19:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 09:19:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-12-09 09:19:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 09:19:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-12-09 09:19:07,862 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2020-12-09 09:19:07,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:07,863 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-12-09 09:19:07,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:19:07,863 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-12-09 09:19:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:19:07,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:07,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:07,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 09:19:07,864 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 09:19:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1564912810, now seen corresponding path program 1 times [2020-12-09 09:19:07,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:07,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33093531] [2020-12-09 09:19:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:07,936 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 09:19:07,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33093531] [2020-12-09 09:19:07,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:07,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:19:07,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359778573] [2020-12-09 09:19:07,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:19:07,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:07,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:19:07,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:19:07,938 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2020-12-09 09:19:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,022 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-12-09 09:19:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:19:08,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 09:19:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,023 INFO L225 Difference]: With dead ends: 117 [2020-12-09 09:19:08,023 INFO L226 Difference]: Without dead ends: 115 [2020-12-09 09:19:08,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:19:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-09 09:19:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 55. [2020-12-09 09:19:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 09:19:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-12-09 09:19:08,027 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-12-09 09:19:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,027 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-12-09 09:19:08,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:19:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-12-09 09:19:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:19:08,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 09:19:08,028 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 09:19:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1564420266, now seen corresponding path program 1 times [2020-12-09 09:19:08,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131375001] [2020-12-09 09:19:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,091 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 09:19:08,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131375001] [2020-12-09 09:19:08,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:19:08,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481620921] [2020-12-09 09:19:08,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:19:08,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:19:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:19:08,092 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 6 states. [2020-12-09 09:19:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,176 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-12-09 09:19:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:19:08,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 09:19:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,177 INFO L225 Difference]: With dead ends: 115 [2020-12-09 09:19:08,177 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 09:19:08,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:19:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 09:19:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 57. [2020-12-09 09:19:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-09 09:19:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-12-09 09:19:08,181 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 12 [2020-12-09 09:19:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,181 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-12-09 09:19:08,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:19:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-12-09 09:19:08,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:19:08,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 09:19:08,182 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 09:19:08,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1661195103, now seen corresponding path program 1 times [2020-12-09 09:19:08,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460761129] [2020-12-09 09:19:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,209 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 09:19:08,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460761129] [2020-12-09 09:19:08,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:19:08,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824945959] [2020-12-09 09:19:08,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:19:08,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:19:08,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:19:08,211 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-12-09 09:19:08,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,275 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-12-09 09:19:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:08,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 09:19:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,276 INFO L225 Difference]: With dead ends: 75 [2020-12-09 09:19:08,276 INFO L226 Difference]: Without dead ends: 73 [2020-12-09 09:19:08,277 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 09:19:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-09 09:19:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2020-12-09 09:19:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 09:19:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-12-09 09:19:08,281 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 12 [2020-12-09 09:19:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,281 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-12-09 09:19:08,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:19:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-12-09 09:19:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:19:08,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 09:19:08,282 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 09:19:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1659471199, now seen corresponding path program 1 times [2020-12-09 09:19:08,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4083257] [2020-12-09 09:19:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,311 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 09:19:08,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4083257] [2020-12-09 09:19:08,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:19:08,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895195952] [2020-12-09 09:19:08,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:19:08,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:19:08,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:19:08,313 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 5 states. [2020-12-09 09:19:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,361 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-12-09 09:19:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:08,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 09:19:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,362 INFO L225 Difference]: With dead ends: 56 [2020-12-09 09:19:08,362 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 09:19:08,363 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 09:19:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 09:19:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-12-09 09:19:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 09:19:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-12-09 09:19:08,366 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 12 [2020-12-09 09:19:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,367 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-12-09 09:19:08,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:19:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-12-09 09:19:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:19:08,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 09:19:08,368 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 09:19:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,368 INFO L82 PathProgramCache]: Analyzing trace with hash 42563455, now seen corresponding path program 1 times [2020-12-09 09:19:08,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318377686] [2020-12-09 09:19:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,438 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 09:19:08,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318377686] [2020-12-09 09:19:08,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:19:08,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749200440] [2020-12-09 09:19:08,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:19:08,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:19:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:19:08,439 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 6 states. [2020-12-09 09:19:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,511 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-12-09 09:19:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:19:08,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 09:19:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,513 INFO L225 Difference]: With dead ends: 91 [2020-12-09 09:19:08,513 INFO L226 Difference]: Without dead ends: 89 [2020-12-09 09:19:08,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:19:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-09 09:19:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59. [2020-12-09 09:19:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 09:19:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-09 09:19:08,519 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2020-12-09 09:19:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,519 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-09 09:19:08,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:19:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-09 09:19:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:19:08,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 09:19:08,520 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 09:19:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,521 INFO L82 PathProgramCache]: Analyzing trace with hash 44110600, now seen corresponding path program 1 times [2020-12-09 09:19:08,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78364495] [2020-12-09 09:19:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,543 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 09:19:08,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78364495] [2020-12-09 09:19:08,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:19:08,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899992314] [2020-12-09 09:19:08,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:19:08,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:19:08,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:19:08,544 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-12-09 09:19:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,600 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-12-09 09:19:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:08,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 09:19:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,601 INFO L225 Difference]: With dead ends: 79 [2020-12-09 09:19:08,601 INFO L226 Difference]: Without dead ends: 77 [2020-12-09 09:19:08,602 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 09:19:08,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-09 09:19:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2020-12-09 09:19:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-09 09:19:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-12-09 09:19:08,605 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2020-12-09 09:19:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,605 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-12-09 09:19:08,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:19:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-12-09 09:19:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:19:08,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 09:19:08,606 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 09:19:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,606 INFO L82 PathProgramCache]: Analyzing trace with hash 96004535, now seen corresponding path program 1 times [2020-12-09 09:19:08,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158887766] [2020-12-09 09:19:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,667 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 09:19:08,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158887766] [2020-12-09 09:19:08,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:19:08,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724936250] [2020-12-09 09:19:08,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:19:08,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:19:08,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:19:08,668 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 6 states. [2020-12-09 09:19:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,726 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-12-09 09:19:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:19:08,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 09:19:08,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,727 INFO L225 Difference]: With dead ends: 69 [2020-12-09 09:19:08,727 INFO L226 Difference]: Without dead ends: 65 [2020-12-09 09:19:08,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:19:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-09 09:19:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-12-09 09:19:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 09:19:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-12-09 09:19:08,730 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2020-12-09 09:19:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,730 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-12-09 09:19:08,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:19:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-12-09 09:19:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 09:19:08,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 09:19:08,731 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 09:19:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1367432731, now seen corresponding path program 1 times [2020-12-09 09:19:08,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878705247] [2020-12-09 09:19:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,794 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 09:19:08,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878705247] [2020-12-09 09:19:08,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:19:08,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001600012] [2020-12-09 09:19:08,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:19:08,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:19:08,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:19:08,796 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-12-09 09:19:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,890 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-12-09 09:19:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:19:08,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 09:19:08,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,891 INFO L225 Difference]: With dead ends: 86 [2020-12-09 09:19:08,891 INFO L226 Difference]: Without dead ends: 84 [2020-12-09 09:19:08,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:19:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-09 09:19:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-12-09 09:19:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-09 09:19:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-09 09:19:08,896 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 14 [2020-12-09 09:19:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,896 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-09 09:19:08,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:19:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-09 09:19:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 09:19:08,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 09:19:08,897 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 09:19:08,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2046065374, now seen corresponding path program 1 times [2020-12-09 09:19:08,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433769668] [2020-12-09 09:19:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,921 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 09:19:08,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433769668] [2020-12-09 09:19:08,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:19:08,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914575214] [2020-12-09 09:19:08,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:19:08,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:19:08,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:19:08,922 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 4 states. [2020-12-09 09:19:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:08,947 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-12-09 09:19:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:19:08,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 09:19:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:08,948 INFO L225 Difference]: With dead ends: 61 [2020-12-09 09:19:08,948 INFO L226 Difference]: Without dead ends: 59 [2020-12-09 09:19:08,948 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 09:19:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-09 09:19:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-12-09 09:19:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 09:19:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-09 09:19:08,952 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2020-12-09 09:19:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:08,952 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-09 09:19:08,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:19:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-09 09:19:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 09:19:08,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:08,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:08,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 09:19:08,952 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 09:19:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash 996486959, now seen corresponding path program 1 times [2020-12-09 09:19:08,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:08,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985386001] [2020-12-09 09:19:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:08,973 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 09:19:08,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985386001] [2020-12-09 09:19:08,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:08,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:19:08,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540496586] [2020-12-09 09:19:08,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:19:08,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:08,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:19:08,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:19:08,974 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 4 states. [2020-12-09 09:19:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:09,006 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-12-09 09:19:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:19:09,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 09:19:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:09,006 INFO L225 Difference]: With dead ends: 59 [2020-12-09 09:19:09,006 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 09:19:09,007 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 09:19:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 09:19:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 09:19:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 09:19:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-09 09:19:09,010 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 16 [2020-12-09 09:19:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:09,010 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-09 09:19:09,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:19:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-09 09:19:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 09:19:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:09,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:19:09,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 09:19:09,011 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 09:19:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash 321012073, now seen corresponding path program 1 times [2020-12-09 09:19:09,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:09,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018304138] [2020-12-09 09:19:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:19:09,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018304138] [2020-12-09 09:19:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406739659] [2020-12-09 09:19:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/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 09:19:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:09,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 09:19:09,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:19:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:19:09,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:19:09,224 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:19:09,224 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:19:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:19:09,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2107404456] [2020-12-09 09:19:09,246 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 09:19:09,246 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:19:09,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:19:09,252 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:19:09,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:19:09,633 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:19:09,832 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-12-09 09:19:09,957 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-09 09:19:10,084 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-09 09:19:10,212 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-09 09:19:10,361 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-12-09 09:19:10,528 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-12-09 09:19:10,919 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2020-12-09 09:19:11,059 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-09 09:19:11,281 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-09 09:19:11,428 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-09 09:19:11,688 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 09:19:11,690 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:19:11,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:19:11,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2020-12-09 09:19:11,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491282091] [2020-12-09 09:19:11,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 09:19:11,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:11,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 09:19:11,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-12-09 09:19:11,692 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 12 states. [2020-12-09 09:19:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:11,837 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2020-12-09 09:19:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 09:19:11,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 09:19:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:11,838 INFO L225 Difference]: With dead ends: 73 [2020-12-09 09:19:11,838 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 09:19:11,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-12-09 09:19:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 09:19:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 44. [2020-12-09 09:19:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-09 09:19:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-12-09 09:19:11,841 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 17 [2020-12-09 09:19:11,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:11,841 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-12-09 09:19:11,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 09:19:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-12-09 09:19:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 09:19:11,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:11,842 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 09:19:12,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:19:12,043 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 09:19:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:12,043 INFO L82 PathProgramCache]: Analyzing trace with hash 841443737, now seen corresponding path program 1 times [2020-12-09 09:19:12,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:12,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169972914] [2020-12-09 09:19:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:12,085 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 09:19:12,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169972914] [2020-12-09 09:19:12,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:12,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:19:12,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413129994] [2020-12-09 09:19:12,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:19:12,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:12,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:19:12,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:19:12,086 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2020-12-09 09:19:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:12,161 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-12-09 09:19:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:19:12,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 09:19:12,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:12,162 INFO L225 Difference]: With dead ends: 59 [2020-12-09 09:19:12,162 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 09:19:12,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:19:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 09:19:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-12-09 09:19:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 09:19:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-12-09 09:19:12,164 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 17 [2020-12-09 09:19:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:12,165 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-12-09 09:19:12,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:19:12,165 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-12-09 09:19:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 09:19:12,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:12,165 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 09:19:12,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-09 09:19:12,165 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 09:19:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:12,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1969266840, now seen corresponding path program 1 times [2020-12-09 09:19:12,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:12,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998640902] [2020-12-09 09:19:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:12,199 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 09:19:12,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998640902] [2020-12-09 09:19:12,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:12,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 09:19:12,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082149755] [2020-12-09 09:19:12,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:19:12,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:12,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:19:12,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:19:12,200 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-12-09 09:19:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:12,267 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-12-09 09:19:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:19:12,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-09 09:19:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:12,268 INFO L225 Difference]: With dead ends: 51 [2020-12-09 09:19:12,268 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 09:19:12,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:19:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 09:19:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2020-12-09 09:19:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 09:19:12,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-12-09 09:19:12,272 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2020-12-09 09:19:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:12,273 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-12-09 09:19:12,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:19:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-12-09 09:19:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 09:19:12,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:19:12,273 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 09:19:12,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-09 09:19:12,274 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 09:19:12,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:19:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1915825760, now seen corresponding path program 1 times [2020-12-09 09:19:12,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:19:12,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990627916] [2020-12-09 09:19:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:19:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:19:12,318 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 09:19:12,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990627916] [2020-12-09 09:19:12,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:19:12,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 09:19:12,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389674819] [2020-12-09 09:19:12,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:19:12,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:19:12,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:19:12,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:19:12,319 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2020-12-09 09:19:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:19:12,362 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-12-09 09:19:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:19:12,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-09 09:19:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:19:12,363 INFO L225 Difference]: With dead ends: 34 [2020-12-09 09:19:12,363 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:19:12,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 09:19:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:19:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:19:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:19:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:19:12,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 09:19:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:19:12,364 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:19:12,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:19:12,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:19:12,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:19:12,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-09 09:19:12,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:19:12,649 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2020-12-09 09:19:12,832 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-12-09 09:19:12,833 INFO L262 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-12-09 09:19:12,833 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-12-09 09:19:12,833 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2020-12-09 09:19:12,833 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-12-09 09:19:12,833 INFO L262 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point L366(line 366) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point L333(line 333) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 297) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 126) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point L309(line 309) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2020-12-09 09:19:12,834 INFO L262 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2020-12-09 09:19:12,835 INFO L265 CegarLoopResult]: At program point L400(lines 15 402) the Hoare annotation is: true [2020-12-09 09:19:12,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2020-12-09 09:19:12,835 INFO L262 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2020-12-09 09:19:12,835 INFO L258 CegarLoopResult]: At program point L384(lines 282 391) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 .cse1) (and .cse3 (<= 1 ULTIMATE.start_main_~main__t~0))))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1 .cse2) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 1) .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~18 0)) .cse2)))) [2020-12-09 09:19:12,835 INFO L258 CegarLoopResult]: At program point L351(lines 32 395) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (let ((.cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0))) (.cse1 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)))) (or (and .cse0 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 0)) .cse1) (and .cse0 .cse1 (<= ULTIMATE.start_main_~main__t~0 1)))) (<= 1 ULTIMATE.start_main_~main__t~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1)) (and (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0))) [2020-12-09 09:19:12,835 INFO L262 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 278) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point L236(line 236) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 333) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L258 CegarLoopResult]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-12-09 09:19:12,836 INFO L262 CegarLoopResult]: For program point L278(line 278) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 378) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L188(line 188) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L378(line 378) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L345(line 345) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 366) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2020-12-09 09:19:12,837 INFO L262 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 188) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L297(line 297) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 176) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L265 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2020-12-09 09:19:12,838 INFO L262 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 236) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L258 CegarLoopResult]: At program point L249(lines 101 251) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 84) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 309) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2020-12-09 09:19:12,839 INFO L262 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2020-12-09 09:19:12,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:19:12 BoogieIcfgContainer [2020-12-09 09:19:12,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:19:12,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:19:12,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:19:12,854 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:19:12,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:19:06" (3/4) ... [2020-12-09 09:19:12,856 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:19:12,866 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 09:19:12,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 09:19:12,868 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:19:12,868 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:19:12,916 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6cddb41a-b995-47fc-a2ec-ae093c173959/bin/utaipan/witness.graphml [2020-12-09 09:19:12,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:19:12,917 INFO L168 Benchmark]: Toolchain (without parser) took 6836.70 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 79.5 MB in the beginning and 56.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 98.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:19:12,917 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 48.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:19:12,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.72 ms. Allocated memory is still 100.7 MB. Free memory was 79.3 MB in the beginning and 63.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:19:12,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 100.7 MB. Free memory was 63.2 MB in the beginning and 61.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:19:12,918 INFO L168 Benchmark]: Boogie Preprocessor took 20.80 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:19:12,919 INFO L168 Benchmark]: RCFGBuilder took 374.82 ms. Allocated memory is still 100.7 MB. Free memory was 59.9 MB in the beginning and 59.5 MB in the end (delta: 461.0 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:19:12,919 INFO L168 Benchmark]: TraceAbstraction took 6134.67 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 58.9 MB in the beginning and 62.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 86.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:19:12,919 INFO L168 Benchmark]: Witness Printer took 62.19 ms. Allocated memory is still 176.2 MB. Free memory was 62.8 MB in the beginning and 56.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 09:19:12,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 48.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 207.72 ms. Allocated memory is still 100.7 MB. Free memory was 79.3 MB in the beginning and 63.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 100.7 MB. Free memory was 63.2 MB in the beginning and 61.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.80 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 59.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 374.82 ms. Allocated memory is still 100.7 MB. Free memory was 59.9 MB in the beginning and 59.5 MB in the end (delta: 461.0 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6134.67 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 58.9 MB in the beginning and 62.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 86.4 MB. Max. memory is 16.1 GB. * Witness Printer took 62.19 ms. Allocated memory is still 176.2 MB. Free memory was 62.8 MB in the beginning and 56.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 188]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 176]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 366]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 378]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 84]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 297]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 126]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 142]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 154]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 236]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 309]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 278]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 224]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: (((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && 0 < main__tagbuf_len) && main__t == 0) && __VERIFIER_assert__cond == 1) || ((((main__t < main__tagbuf_len && __VERIFIER_assert__cond == 1) && ((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t))) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((main__t < main__tagbuf_len && (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && main__t <= 1))) && 1 <= main__t) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) || (0 < main__tagbuf_len && main__t == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 22, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 973 SDtfs, 1434 SDslu, 1466 SDs, 0 SdLazy, 1724 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 22 MinimizatonAttempts, 436 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 122 HoareAnnotationTreeSize, 6 FomulaSimplifications, 1331350 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 345243 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 12180 SizeOfPredicates, 8 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 24 InterpolantComputations, 21 PerfectInterpolantSequences, 6/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...