./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef15c4790969d8e640b2241771e44174daa41407 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:47:53,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:47:53,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:47:53,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:47:53,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:47:53,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:47:53,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:47:53,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:47:53,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:47:53,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:47:53,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:47:53,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:47:53,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:47:53,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:47:53,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:47:53,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:47:53,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:47:53,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:47:53,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:47:53,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:47:53,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:47:53,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:47:53,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:47:53,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:47:53,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:47:53,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:47:53,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:47:53,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:47:53,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:47:53,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:47:53,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:47:53,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:47:53,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:47:53,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:47:53,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:47:53,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:47:53,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:47:53,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:47:53,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:47:53,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:47:53,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:47:53,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:47:53,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:47:53,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:47:53,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:47:53,361 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:47:53,361 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:47:53,361 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:47:53,361 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:47:53,361 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:47:53,362 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:47:53,362 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:47:53,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:47:53,362 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:47:53,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:47:53,362 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:47:53,362 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:47:53,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:47:53,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:47:53,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:47:53,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:47:53,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:47:53,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:47:53,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:47:53,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:47:53,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:47:53,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:47:53,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:47:53,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:47:53,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:47:53,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:47:53,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:47:53,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:47:53,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:47:53,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:47:53,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:47:53,365 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:47:53,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:47:53,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:47:53,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:47:53,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:47:53,365 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_67c076a6-cd15-4904-a6f3-893decf6fcca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef15c4790969d8e640b2241771e44174daa41407 [2020-12-09 08:47:53,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:47:53,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:47:53,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:47:53,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:47:53,575 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:47:53,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-12-09 08:47:53,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/data/bccc48ae0/eb23fb73558848818b1705dffa1ac42c/FLAGfb6ad8d06 [2020-12-09 08:47:53,998 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:47:53,999 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-12-09 08:47:54,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/data/bccc48ae0/eb23fb73558848818b1705dffa1ac42c/FLAGfb6ad8d06 [2020-12-09 08:47:54,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/data/bccc48ae0/eb23fb73558848818b1705dffa1ac42c [2020-12-09 08:47:54,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:47:54,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:47:54,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:47:54,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:47:54,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:47:54,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b568b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54, skipping insertion in model container [2020-12-09 08:47:54,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:47:54,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:47:54,167 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2020-12-09 08:47:54,171 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2020-12-09 08:47:54,173 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2020-12-09 08:47:54,175 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2020-12-09 08:47:54,178 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2020-12-09 08:47:54,179 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2020-12-09 08:47:54,182 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2020-12-09 08:47:54,184 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2020-12-09 08:47:54,186 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2020-12-09 08:47:54,187 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2020-12-09 08:47:54,190 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2020-12-09 08:47:54,191 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2020-12-09 08:47:54,194 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2020-12-09 08:47:54,195 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2020-12-09 08:47:54,197 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2020-12-09 08:47:54,198 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2020-12-09 08:47:54,200 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2020-12-09 08:47:54,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:47:54,210 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:47:54,223 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1123,1136] [2020-12-09 08:47:54,224 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1338,1351] [2020-12-09 08:47:54,225 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1654,1667] [2020-12-09 08:47:54,225 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[1869,1882] [2020-12-09 08:47:54,227 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2402,2415] [2020-12-09 08:47:54,228 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2617,2630] [2020-12-09 08:47:54,229 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[2919,2932] [2020-12-09 08:47:54,230 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3134,3147] [2020-12-09 08:47:54,231 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3404,3417] [2020-12-09 08:47:54,232 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[3622,3635] [2020-12-09 08:47:54,234 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4106,4119] [2020-12-09 08:47:54,234 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4324,4337] [2020-12-09 08:47:54,236 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[4820,4833] [2020-12-09 08:47:54,237 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5221,5234] [2020-12-09 08:47:54,238 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5439,5452] [2020-12-09 08:47:54,239 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[5881,5894] [2020-12-09 08:47:54,240 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_67c076a6-cd15-4904-a6f3-893decf6fcca/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c[6099,6112] [2020-12-09 08:47:54,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:47:54,250 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:47:54,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54 WrapperNode [2020-12-09 08:47:54,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:47:54,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:47:54,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:47:54,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:47:54,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:47:54,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:47:54,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:47:54,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:47:54,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... [2020-12-09 08:47:54,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:47:54,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:47:54,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:47:54,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:47:54,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/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 08:47:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:47:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:47:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:47:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:47:54,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:47:54,637 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 08:47:54,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:47:54 BoogieIcfgContainer [2020-12-09 08:47:54,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:47:54,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:47:54,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:47:54,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:47:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:47:54" (1/3) ... [2020-12-09 08:47:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8968faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:47:54, skipping insertion in model container [2020-12-09 08:47:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:47:54" (2/3) ... [2020-12-09 08:47:54,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8968faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:47:54, skipping insertion in model container [2020-12-09 08:47:54,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:47:54" (3/3) ... [2020-12-09 08:47:54,646 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-12-09 08:47:54,655 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:47:54,658 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-09 08:47:54,666 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-09 08:47:54,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:47:54,682 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:47:54,682 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:47:54,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:47:54,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:47:54,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:47:54,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:47:54,683 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:47:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-12-09 08:47:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:47:54,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:54,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:54,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:54,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2133700231, now seen corresponding path program 1 times [2020-12-09 08:47:54,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:54,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083649629] [2020-12-09 08:47:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:54,852 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 08:47:54,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083649629] [2020-12-09 08:47:54,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:54,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:47:54,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184357379] [2020-12-09 08:47:54,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:47:54,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:54,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:47:54,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:47:54,867 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-12-09 08:47:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:54,969 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2020-12-09 08:47:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:54,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 08:47:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:54,976 INFO L225 Difference]: With dead ends: 120 [2020-12-09 08:47:54,977 INFO L226 Difference]: Without dead ends: 108 [2020-12-09 08:47:54,978 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 08:47:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-09 08:47:55,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2020-12-09 08:47:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 08:47:55,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-12-09 08:47:55,010 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 7 [2020-12-09 08:47:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,010 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-12-09 08:47:55,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:47:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-12-09 08:47:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:47:55,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:47:55,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2130064740, now seen corresponding path program 1 times [2020-12-09 08:47:55,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954624649] [2020-12-09 08:47:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:47:55,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954624649] [2020-12-09 08:47:55,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:47:55,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696088910] [2020-12-09 08:47:55,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:47:55,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:47:55,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:47:55,053 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 4 states. [2020-12-09 08:47:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,097 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-09 08:47:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:47:55,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 08:47:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,098 INFO L225 Difference]: With dead ends: 64 [2020-12-09 08:47:55,098 INFO L226 Difference]: Without dead ends: 62 [2020-12-09 08:47:55,099 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 08:47:55,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-09 08:47:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-09 08:47:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-09 08:47:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-09 08:47:55,104 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 7 [2020-12-09 08:47:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,104 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-09 08:47:55,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:47:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-09 08:47:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:47:55,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 08:47:55,105 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1607501556, now seen corresponding path program 1 times [2020-12-09 08:47:55,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405000829] [2020-12-09 08:47:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,140 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 08:47:55,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405000829] [2020-12-09 08:47:55,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:47:55,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785278052] [2020-12-09 08:47:55,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:47:55,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:47:55,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:47:55,142 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-12-09 08:47:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,187 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-09 08:47:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:55,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 08:47:55,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,188 INFO L225 Difference]: With dead ends: 68 [2020-12-09 08:47:55,188 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 08:47:55,188 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 08:47:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 08:47:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-12-09 08:47:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 08:47:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-12-09 08:47:55,194 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2020-12-09 08:47:55,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,194 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-12-09 08:47:55,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:47:55,194 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-12-09 08:47:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:47:55,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 08:47:55,195 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,195 INFO L82 PathProgramCache]: Analyzing trace with hash -448408979, now seen corresponding path program 1 times [2020-12-09 08:47:55,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694944884] [2020-12-09 08:47:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,235 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 08:47:55,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694944884] [2020-12-09 08:47:55,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:47:55,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134744762] [2020-12-09 08:47:55,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:47:55,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:47:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:47:55,238 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-12-09 08:47:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,311 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-12-09 08:47:55,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:55,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 08:47:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,312 INFO L225 Difference]: With dead ends: 66 [2020-12-09 08:47:55,312 INFO L226 Difference]: Without dead ends: 64 [2020-12-09 08:47:55,312 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 08:47:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-09 08:47:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-09 08:47:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 08:47:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-09 08:47:55,317 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 10 [2020-12-09 08:47:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,318 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-09 08:47:55,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:47:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-09 08:47:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:47:55,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 08:47:55,319 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1379104200, now seen corresponding path program 1 times [2020-12-09 08:47:55,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671631486] [2020-12-09 08:47:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,353 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 08:47:55,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671631486] [2020-12-09 08:47:55,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:47:55,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666077218] [2020-12-09 08:47:55,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:47:55,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:47:55,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:47:55,355 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 5 states. [2020-12-09 08:47:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,421 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-09 08:47:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:55,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 08:47:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,422 INFO L225 Difference]: With dead ends: 64 [2020-12-09 08:47:55,422 INFO L226 Difference]: Without dead ends: 62 [2020-12-09 08:47:55,422 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 08:47:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-09 08:47:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-12-09 08:47:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-09 08:47:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-09 08:47:55,427 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 10 [2020-12-09 08:47:55,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,428 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-09 08:47:55,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:47:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-09 08:47:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:47:55,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 08:47:55,429 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1015772272, now seen corresponding path program 1 times [2020-12-09 08:47:55,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085063812] [2020-12-09 08:47:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,468 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 08:47:55,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085063812] [2020-12-09 08:47:55,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:47:55,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521422157] [2020-12-09 08:47:55,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:47:55,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:47:55,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:47:55,470 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 4 states. [2020-12-09 08:47:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,512 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-09 08:47:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:47:55,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 08:47:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,513 INFO L225 Difference]: With dead ends: 62 [2020-12-09 08:47:55,513 INFO L226 Difference]: Without dead ends: 58 [2020-12-09 08:47:55,514 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 08:47:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-09 08:47:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-12-09 08:47:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-09 08:47:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-12-09 08:47:55,517 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 11 [2020-12-09 08:47:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,517 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-12-09 08:47:55,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:47:55,517 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-12-09 08:47:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:47:55,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 08:47:55,518 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1015281714, now seen corresponding path program 1 times [2020-12-09 08:47:55,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108529663] [2020-12-09 08:47:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,555 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 08:47:55,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108529663] [2020-12-09 08:47:55,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:47:55,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917469110] [2020-12-09 08:47:55,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:47:55,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:47:55,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:47:55,557 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-12-09 08:47:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,648 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-09 08:47:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:55,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 08:47:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,649 INFO L225 Difference]: With dead ends: 99 [2020-12-09 08:47:55,649 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 08:47:55,650 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 08:47:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 08:47:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 55. [2020-12-09 08:47:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 08:47:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-09 08:47:55,656 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 11 [2020-12-09 08:47:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,656 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-09 08:47:55,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:47:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-09 08:47:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:47:55,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 08:47:55,657 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,658 INFO L82 PathProgramCache]: Analyzing trace with hash 197446834, now seen corresponding path program 1 times [2020-12-09 08:47:55,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490449865] [2020-12-09 08:47:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,689 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 08:47:55,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490449865] [2020-12-09 08:47:55,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:47:55,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152426201] [2020-12-09 08:47:55,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:47:55,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:47:55,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:47:55,691 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-12-09 08:47:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,730 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-12-09 08:47:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:47:55,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 08:47:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,731 INFO L225 Difference]: With dead ends: 56 [2020-12-09 08:47:55,731 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 08:47:55,731 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 08:47:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 08:47:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-12-09 08:47:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-09 08:47:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-12-09 08:47:55,734 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 11 [2020-12-09 08:47:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,734 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-12-09 08:47:55,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:47:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-12-09 08:47:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:47:55,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 08:47:55,735 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1408957852, now seen corresponding path program 1 times [2020-12-09 08:47:55,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367934387] [2020-12-09 08:47:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,823 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 08:47:55,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367934387] [2020-12-09 08:47:55,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:47:55,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124641325] [2020-12-09 08:47:55,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:47:55,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:47:55,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:47:55,825 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-12-09 08:47:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:55,931 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-12-09 08:47:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:47:55,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 08:47:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:55,931 INFO L225 Difference]: With dead ends: 117 [2020-12-09 08:47:55,932 INFO L226 Difference]: Without dead ends: 115 [2020-12-09 08:47:55,932 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 08:47:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-09 08:47:55,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 56. [2020-12-09 08:47:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-09 08:47:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-12-09 08:47:55,936 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 12 [2020-12-09 08:47:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:55,936 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-12-09 08:47:55,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:47:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-12-09 08:47:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:47:55,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:55,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:55,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 08:47:55,937 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:55,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:55,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1842939021, now seen corresponding path program 1 times [2020-12-09 08:47:55,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:55,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557116623] [2020-12-09 08:47:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:55,969 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 08:47:55,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557116623] [2020-12-09 08:47:55,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:55,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:47:55,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831445965] [2020-12-09 08:47:55,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:47:55,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:47:55,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:47:55,970 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2020-12-09 08:47:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,038 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-12-09 08:47:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:56,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 08:47:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,039 INFO L225 Difference]: With dead ends: 73 [2020-12-09 08:47:56,039 INFO L226 Difference]: Without dead ends: 71 [2020-12-09 08:47:56,039 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 08:47:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-09 08:47:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2020-12-09 08:47:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-09 08:47:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-09 08:47:56,043 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 12 [2020-12-09 08:47:56,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,043 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-09 08:47:56,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:47:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-09 08:47:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:47:56,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 08:47:56,044 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1844662925, now seen corresponding path program 1 times [2020-12-09 08:47:56,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680453134] [2020-12-09 08:47:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,065 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 08:47:56,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680453134] [2020-12-09 08:47:56,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:47:56,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855037465] [2020-12-09 08:47:56,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:47:56,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:47:56,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:47:56,066 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2020-12-09 08:47:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,116 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-12-09 08:47:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:56,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 08:47:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,117 INFO L225 Difference]: With dead ends: 54 [2020-12-09 08:47:56,117 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 08:47:56,117 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 08:47:56,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 08:47:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-09 08:47:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 08:47:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-12-09 08:47:56,120 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 12 [2020-12-09 08:47:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,120 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-12-09 08:47:56,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:47:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-12-09 08:47:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:47:56,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 08:47:56,121 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,121 INFO L82 PathProgramCache]: Analyzing trace with hash -734819501, now seen corresponding path program 1 times [2020-12-09 08:47:56,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318575434] [2020-12-09 08:47:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,179 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 08:47:56,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318575434] [2020-12-09 08:47:56,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:47:56,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551834647] [2020-12-09 08:47:56,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:47:56,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:47:56,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:47:56,181 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-12-09 08:47:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,240 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-12-09 08:47:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 08:47:56,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 08:47:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,242 INFO L225 Difference]: With dead ends: 77 [2020-12-09 08:47:56,242 INFO L226 Difference]: Without dead ends: 75 [2020-12-09 08:47:56,242 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 08:47:56,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-09 08:47:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 52. [2020-12-09 08:47:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 08:47:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-12-09 08:47:56,246 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 13 [2020-12-09 08:47:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,247 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-12-09 08:47:56,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:47:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-12-09 08:47:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:47:56,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 08:47:56,248 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1296538901, now seen corresponding path program 1 times [2020-12-09 08:47:56,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246217652] [2020-12-09 08:47:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,316 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 08:47:56,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246217652] [2020-12-09 08:47:56,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:47:56,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741447581] [2020-12-09 08:47:56,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:47:56,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:47:56,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:47:56,317 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-12-09 08:47:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,374 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-12-09 08:47:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:47:56,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 08:47:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,375 INFO L225 Difference]: With dead ends: 91 [2020-12-09 08:47:56,375 INFO L226 Difference]: Without dead ends: 89 [2020-12-09 08:47:56,376 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 08:47:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-09 08:47:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 60. [2020-12-09 08:47:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 08:47:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-12-09 08:47:56,379 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 13 [2020-12-09 08:47:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,379 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-12-09 08:47:56,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:47:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-12-09 08:47:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:47:56,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 08:47:56,380 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1298086046, now seen corresponding path program 1 times [2020-12-09 08:47:56,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102844381] [2020-12-09 08:47:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,405 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 08:47:56,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102844381] [2020-12-09 08:47:56,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:47:56,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411495758] [2020-12-09 08:47:56,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:47:56,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:47:56,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:47:56,407 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 5 states. [2020-12-09 08:47:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,464 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-12-09 08:47:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:47:56,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 08:47:56,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,465 INFO L225 Difference]: With dead ends: 80 [2020-12-09 08:47:56,465 INFO L226 Difference]: Without dead ends: 78 [2020-12-09 08:47:56,465 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 08:47:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-09 08:47:56,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-12-09 08:47:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 08:47:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-12-09 08:47:56,469 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2020-12-09 08:47:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,469 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-12-09 08:47:56,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:47:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-12-09 08:47:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 08:47:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 08:47:56,471 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1349979981, now seen corresponding path program 1 times [2020-12-09 08:47:56,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619810151] [2020-12-09 08:47:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,532 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 08:47:56,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619810151] [2020-12-09 08:47:56,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:47:56,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168053538] [2020-12-09 08:47:56,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:47:56,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:47:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:47:56,533 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-12-09 08:47:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,594 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-12-09 08:47:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:47:56,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 08:47:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,595 INFO L225 Difference]: With dead ends: 69 [2020-12-09 08:47:56,595 INFO L226 Difference]: Without dead ends: 65 [2020-12-09 08:47:56,596 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 08:47:56,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-09 08:47:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-12-09 08:47:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 08:47:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-12-09 08:47:56,599 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2020-12-09 08:47:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,599 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-12-09 08:47:56,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:47:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-12-09 08:47:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:47:56,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 08:47:56,600 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1585965895, now seen corresponding path program 1 times [2020-12-09 08:47:56,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002691533] [2020-12-09 08:47:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,670 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 08:47:56,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002691533] [2020-12-09 08:47:56,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:47:56,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108120083] [2020-12-09 08:47:56,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:47:56,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:47:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:47:56,671 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-12-09 08:47:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,748 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-12-09 08:47:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 08:47:56,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 08:47:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,749 INFO L225 Difference]: With dead ends: 86 [2020-12-09 08:47:56,749 INFO L226 Difference]: Without dead ends: 84 [2020-12-09 08:47:56,750 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 08:47:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-09 08:47:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-12-09 08:47:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-09 08:47:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-12-09 08:47:56,752 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 14 [2020-12-09 08:47:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,753 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-12-09 08:47:56,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:47:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-12-09 08:47:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 08:47:56,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 08:47:56,753 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash 433495416, now seen corresponding path program 1 times [2020-12-09 08:47:56,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653412602] [2020-12-09 08:47:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,775 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 08:47:56,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653412602] [2020-12-09 08:47:56,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:47:56,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665243807] [2020-12-09 08:47:56,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:47:56,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:47:56,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:47:56,777 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 4 states. [2020-12-09 08:47:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,801 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-09 08:47:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:47:56,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 08:47:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,802 INFO L225 Difference]: With dead ends: 62 [2020-12-09 08:47:56,802 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 08:47:56,802 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 08:47:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 08:47:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-09 08:47:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 08:47:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-12-09 08:47:56,805 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 15 [2020-12-09 08:47:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,805 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-12-09 08:47:56,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:47:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-12-09 08:47:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 08:47:56,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 08:47:56,806 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,806 INFO L82 PathProgramCache]: Analyzing trace with hash 553460123, now seen corresponding path program 1 times [2020-12-09 08:47:56,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306472703] [2020-12-09 08:47:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,823 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 08:47:56,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306472703] [2020-12-09 08:47:56,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:47:56,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:47:56,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410648594] [2020-12-09 08:47:56,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:47:56,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:56,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:47:56,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:47:56,825 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2020-12-09 08:47:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:56,858 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-12-09 08:47:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:47:56,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 08:47:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:56,859 INFO L225 Difference]: With dead ends: 60 [2020-12-09 08:47:56,859 INFO L226 Difference]: Without dead ends: 56 [2020-12-09 08:47:56,859 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 08:47:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-09 08:47:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-09 08:47:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-09 08:47:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-12-09 08:47:56,862 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 16 [2020-12-09 08:47:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:56,862 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-12-09 08:47:56,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:47:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-12-09 08:47:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 08:47:56,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:56,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:47:56,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 08:47:56,863 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:56,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:56,863 INFO L82 PathProgramCache]: Analyzing trace with hash -995706929, now seen corresponding path program 1 times [2020-12-09 08:47:56,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:56,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004128028] [2020-12-09 08:47:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:47:56,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004128028] [2020-12-09 08:47:56,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528033086] [2020-12-09 08:47:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/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 08:47:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:47:56,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:47:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:47:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:47:57,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:47:57,079 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 08:47:57,079 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:47:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:47:57,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [856454119] [2020-12-09 08:47:57,101 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-12-09 08:47:57,102 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:47:57,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:47:57,109 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:47:57,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:47:57,482 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:47:57,724 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-12-09 08:47:57,861 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-09 08:47:58,002 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-09 08:47:58,142 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-12-09 08:47:58,302 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-12-09 08:47:58,466 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-12-09 08:47:58,900 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-12-09 08:47:59,192 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-09 08:47:59,383 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-12-09 08:47:59,600 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-12-09 08:47:59,602 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:47:59,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:47:59,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2020-12-09 08:47:59,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326906359] [2020-12-09 08:47:59,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 08:47:59,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:47:59,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 08:47:59,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-12-09 08:47:59,603 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 12 states. [2020-12-09 08:47:59,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:47:59,768 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-12-09 08:47:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 08:47:59,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 08:47:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:47:59,769 INFO L225 Difference]: With dead ends: 92 [2020-12-09 08:47:59,769 INFO L226 Difference]: Without dead ends: 90 [2020-12-09 08:47:59,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2020-12-09 08:47:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-09 08:47:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 52. [2020-12-09 08:47:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 08:47:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-12-09 08:47:59,773 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 17 [2020-12-09 08:47:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:47:59,773 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-12-09 08:47:59,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 08:47:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-12-09 08:47:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 08:47:59,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:47:59,774 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 08:47:59,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:47:59,974 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:47:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:47:59,975 INFO L82 PathProgramCache]: Analyzing trace with hash -7486289, now seen corresponding path program 1 times [2020-12-09 08:47:59,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:47:59,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646735772] [2020-12-09 08:47:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:47:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:48:00,015 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 08:48:00,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646735772] [2020-12-09 08:48:00,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:48:00,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:48:00,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016487344] [2020-12-09 08:48:00,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:48:00,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:48:00,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:48:00,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:48:00,016 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 6 states. [2020-12-09 08:48:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:48:00,091 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-12-09 08:48:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:48:00,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 08:48:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:48:00,092 INFO L225 Difference]: With dead ends: 67 [2020-12-09 08:48:00,092 INFO L226 Difference]: Without dead ends: 65 [2020-12-09 08:48:00,092 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 08:48:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-09 08:48:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2020-12-09 08:48:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 08:48:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-09 08:48:00,096 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 17 [2020-12-09 08:48:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:48:00,096 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-09 08:48:00,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:48:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-09 08:48:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 08:48:00,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:48:00,096 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 08:48:00,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-09 08:48:00,097 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:48:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:48:00,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1807516650, now seen corresponding path program 1 times [2020-12-09 08:48:00,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:48:00,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419153388] [2020-12-09 08:48:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:48:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:48:00,129 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 08:48:00,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419153388] [2020-12-09 08:48:00,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:48:00,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:48:00,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684243716] [2020-12-09 08:48:00,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:48:00,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:48:00,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:48:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:48:00,130 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 6 states. [2020-12-09 08:48:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:48:00,193 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-12-09 08:48:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:48:00,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 08:48:00,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:48:00,194 INFO L225 Difference]: With dead ends: 59 [2020-12-09 08:48:00,194 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 08:48:00,194 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 08:48:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 08:48:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-12-09 08:48:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 08:48:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-12-09 08:48:00,197 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 18 [2020-12-09 08:48:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:48:00,197 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-12-09 08:48:00,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:48:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-12-09 08:48:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 08:48:00,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:48:00,197 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 08:48:00,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-09 08:48:00,198 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:48:00,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:48:00,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1754075570, now seen corresponding path program 1 times [2020-12-09 08:48:00,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:48:00,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507005861] [2020-12-09 08:48:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:48:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:48:00,231 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 08:48:00,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507005861] [2020-12-09 08:48:00,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:48:00,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:48:00,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665955770] [2020-12-09 08:48:00,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:48:00,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:48:00,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:48:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:48:00,233 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 6 states. [2020-12-09 08:48:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:48:00,284 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-12-09 08:48:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:48:00,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 08:48:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:48:00,284 INFO L225 Difference]: With dead ends: 42 [2020-12-09 08:48:00,284 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 08:48:00,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:48:00,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 08:48:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-09 08:48:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 08:48:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-09 08:48:00,286 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-12-09 08:48:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:48:00,286 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-09 08:48:00,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:48:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-09 08:48:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 08:48:00,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:48:00,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:48:00,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-09 08:48:00,287 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:48:00,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:48:00,287 INFO L82 PathProgramCache]: Analyzing trace with hash -808942776, now seen corresponding path program 1 times [2020-12-09 08:48:00,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:48:00,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035225179] [2020-12-09 08:48:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:48:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:48:00,319 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 08:48:00,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035225179] [2020-12-09 08:48:00,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489184803] [2020-12-09 08:48:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:48:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:48:00,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:48:00,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:48:00,423 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 08:48:00,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:48:00,450 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 08:48:00,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [481934092] [2020-12-09 08:48:00,452 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-12-09 08:48:00,452 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:48:00,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:48:00,453 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:48:00,453 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:48:00,728 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:48:00,854 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-12-09 08:48:01,310 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-12-09 08:48:01,465 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-12-09 08:48:01,897 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-12-09 08:48:02,188 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-12-09 08:48:02,365 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-12-09 08:48:02,553 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2020-12-09 08:48:02,840 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-12-09 08:48:02,841 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:48:02,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:48:02,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 12 [2020-12-09 08:48:02,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896632159] [2020-12-09 08:48:02,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 08:48:02,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:48:02,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 08:48:02,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-12-09 08:48:02,842 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2020-12-09 08:48:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:48:02,943 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-12-09 08:48:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 08:48:02,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-09 08:48:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:48:02,943 INFO L225 Difference]: With dead ends: 19 [2020-12-09 08:48:02,943 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:48:02,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2020-12-09 08:48:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:48:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:48:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:48:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:48:02,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 08:48:02,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:48:02,945 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:48:02,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 08:48:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:48:02,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:48:03,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-09 08:48:03,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:48:03,533 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point L225(line 225) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point L349(lines 349 358) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L258 CegarLoopResult]: At program point L250(lines 102 252) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 56) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point L308(lines 308 316) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-12-09 08:48:03,588 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 279) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L102(lines 102 252) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L325(lines 325 362) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L20(lines 20 374) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L177(line 177) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 339) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L235(lines 235 243) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L351(line 351) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 237) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L153(lines 153 161) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L54(lines 54 254) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L310(line 310) no Hoare annotation was computed. [2020-12-09 08:48:03,589 INFO L262 CegarLoopResult]: For program point L277(lines 277 364) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 310) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point L71(lines 71 95) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point L187(lines 187 197) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point L113(lines 113 204) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point L237(line 237) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L258 CegarLoopResult]: At program point L328(lines 32 368) the Hoare annotation is: (let ((.cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0)) (.cse3 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse1 (let ((.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse4 .cse0 .cse3) (and .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0)))))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (= ULTIMATE.start_main_~main__t~0 0)) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse1 (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) .cse2) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1 (<= 0 ULTIMATE.start_main_~main__t~0) .cse3 .cse2)))) [2020-12-09 08:48:03,590 INFO L258 CegarLoopResult]: At program point L196(lines 60 254) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0)) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 127) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-12-09 08:48:03,590 INFO L262 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L279(line 279) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L337(lines 337 360) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 351) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L106(lines 106 210) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L296(lines 296 318) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L32(lines 32 368) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L189(line 189) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L24(lines 24 369) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point L289(lines 289 363) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:48:03,591 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L223(lines 223 245) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L83(lines 83 93) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L339(line 339) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L141(lines 141 163) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L42(lines 42 256) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L298(line 298) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L125(lines 125 202) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L265 CegarLoopResult]: At program point L315(lines 32 368) the Hoare annotation is: true [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 225) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L216(lines 216 251) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L265 CegarLoopResult]: At program point L373(lines 15 375) the Hoare annotation is: true [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point L175(lines 175 199) no Hoare annotation was computed. [2020-12-09 08:48:03,592 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 298) no Hoare annotation was computed. [2020-12-09 08:48:03,593 INFO L262 CegarLoopResult]: For program point L266(lines 266 366) no Hoare annotation was computed. [2020-12-09 08:48:03,593 INFO L262 CegarLoopResult]: For program point L134(lines 134 201) no Hoare annotation was computed. [2020-12-09 08:48:03,593 INFO L258 CegarLoopResult]: At program point L357(lines 283 364) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse4 .cse2) (and .cse4 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse3 .cse2) (and .cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0)))))) (.cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 1))) (or (and .cse0 (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 1) .cse1) (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse2 .cse1)))) [2020-12-09 08:48:03,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:48:03 BoogieIcfgContainer [2020-12-09 08:48:03,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:48:03,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:48:03,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:48:03,608 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:48:03,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:47:54" (3/4) ... [2020-12-09 08:48:03,610 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:48:03,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 08:48:03,619 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 08:48:03,619 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:48:03,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:48:03,670 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_67c076a6-cd15-4904-a6f3-893decf6fcca/bin/utaipan/witness.graphml [2020-12-09 08:48:03,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:48:03,671 INFO L168 Benchmark]: Toolchain (without parser) took 9648.85 ms. Allocated memory was 102.8 MB in the beginning and 247.5 MB in the end (delta: 144.7 MB). Free memory was 62.9 MB in the beginning and 219.6 MB in the end (delta: -156.7 MB). Peak memory consumption was 131.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:48:03,671 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 102.8 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:48:03,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.48 ms. Allocated memory is still 102.8 MB. Free memory was 62.7 MB in the beginning and 75.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:48:03,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.99 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 73.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:48:03,672 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 102.8 MB. Free memory was 73.1 MB in the beginning and 71.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:48:03,672 INFO L168 Benchmark]: RCFGBuilder took 327.75 ms. Allocated memory is still 102.8 MB. Free memory was 71.8 MB in the beginning and 62.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:48:03,673 INFO L168 Benchmark]: TraceAbstraction took 8966.55 ms. Allocated memory was 102.8 MB in the beginning and 247.5 MB in the end (delta: 144.7 MB). Free memory was 61.7 MB in the beginning and 79.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 128.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:48:03,673 INFO L168 Benchmark]: Witness Printer took 61.97 ms. Allocated memory is still 247.5 MB. Free memory was 79.9 MB in the beginning and 219.6 MB in the end (delta: -139.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:48:03,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 102.8 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.48 ms. Allocated memory is still 102.8 MB. Free memory was 62.7 MB in the beginning and 75.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.99 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 73.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 102.8 MB. Free memory was 73.1 MB in the beginning and 71.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 327.75 ms. Allocated memory is still 102.8 MB. Free memory was 71.8 MB in the beginning and 62.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8966.55 ms. Allocated memory was 102.8 MB in the beginning and 247.5 MB in the end (delta: 144.7 MB). Free memory was 61.7 MB in the beginning and 79.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 128.7 MB. Max. memory is 16.1 GB. * Witness Printer took 61.97 ms. Allocated memory is still 247.5 MB. Free memory was 79.9 MB in the beginning and 219.6 MB in the end (delta: -139.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 351]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 339]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 279]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 127]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 143]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 225]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 310]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 298]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 237]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((0 < main__tagbuf_len && main__t == 0) || (((((!(main__t == main__tagbuf_len) && (((!(__VERIFIER_assert__cond == 0) && 0 < main__tagbuf_len) && main__t <= 1) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 1 <= main__t) && main__t <= main__tagbuf_len) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1)) || ((((main__t < main__tagbuf_len && (((!(__VERIFIER_assert__cond == 0) && 0 < main__tagbuf_len) && main__t <= 1) || (!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)))) && 0 <= main__t) && main__t <= 1) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && !(main__t == main__tagbuf_len)) && main__t <= main__tagbuf_len) && __VERIFIER_assert__cond == 1) && __VERIFIER_assert__cond == 1) || (((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && 0 < main__tagbuf_len) && main__t == 0) && __VERIFIER_assert__cond == 1) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0)) && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 69 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 933 SDtfs, 1525 SDslu, 1302 SDs, 0 SdLazy, 1662 SolverSat, 158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 117 SyntacticMatches, 8 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 23 MinimizatonAttempts, 338 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 14 NumberOfFragments, 225 HoareAnnotationTreeSize, 6 FomulaSimplifications, 257383 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 16323 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 14838 SizeOfPredicates, 16 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 12/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...