./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8 --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 4b3c25b2e1855c4c0a30872aa894c42326e9c019 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:44:35,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:35,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:35,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:35,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:35,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:35,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:35,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:35,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:35,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:35,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:35,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:35,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:35,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:35,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:35,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:35,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:35,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:35,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:35,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:35,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:35,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:35,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:35,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:35,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:35,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:35,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:35,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:35,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:35,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:35,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:35,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:35,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:35,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:35,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:35,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:35,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:35,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:35,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:35,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:35,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:35,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:44:35,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:35,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:35,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:35,426 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:35,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:35,426 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:35,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:44:35,434 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:35,434 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:35,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:44:35,436 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:44:35,436 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:35,436 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:44:35,437 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:44:35,437 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:44:35,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:35,438 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:35,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:44:35,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:35,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:35,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:35,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:35,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:35,440 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:35,440 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:35,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:35,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:35,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:35,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:35,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:35,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:35,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:35,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:35,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:35,444 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:44:35,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:44:35,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:35,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:35,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:35,446 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_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b3c25b2e1855c4c0a30872aa894c42326e9c019 [2021-10-13 06:44:35,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:35,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:35,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:35,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:35,781 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:35,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2021-10-13 06:44:35,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/data/29754670f/a7dd31bb0d6f4437bd00073d6bb2fe7a/FLAG6cc68578e [2021-10-13 06:44:36,457 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:36,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2021-10-13 06:44:36,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/data/29754670f/a7dd31bb0d6f4437bd00073d6bb2fe7a/FLAG6cc68578e [2021-10-13 06:44:36,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/data/29754670f/a7dd31bb0d6f4437bd00073d6bb2fe7a [2021-10-13 06:44:36,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:36,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:36,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:36,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:36,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:36,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:36" (1/1) ... [2021-10-13 06:44:36,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4afd6587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:36, skipping insertion in model container [2021-10-13 06:44:36,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:36" (1/1) ... [2021-10-13 06:44:36,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:36,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:37,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[919,932] [2021-10-13 06:44:37,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[1134,1147] [2021-10-13 06:44:37,058 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[2208,2221] [2021-10-13 06:44:37,060 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[2423,2436] [2021-10-13 06:44:37,063 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[2918,2931] [2021-10-13 06:44:37,065 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3133,3146] [2021-10-13 06:44:37,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3435,3448] [2021-10-13 06:44:37,070 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3653,3666] [2021-10-13 06:44:37,072 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3929,3942] [2021-10-13 06:44:37,074 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[4147,4160] [2021-10-13 06:44:37,078 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[4717,4730] [2021-10-13 06:44:37,080 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[4935,4948] [2021-10-13 06:44:37,138 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[15828,15841] [2021-10-13 06:44:37,140 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[16046,16059] [2021-10-13 06:44:37,144 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[16441,16454] [2021-10-13 06:44:37,147 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[16659,16672] [2021-10-13 06:44:37,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:37,164 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:37,184 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[919,932] [2021-10-13 06:44:37,186 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[1134,1147] [2021-10-13 06:44:37,190 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[2208,2221] [2021-10-13 06:44:37,203 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[2423,2436] [2021-10-13 06:44:37,205 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[2918,2931] [2021-10-13 06:44:37,206 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3133,3146] [2021-10-13 06:44:37,208 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3435,3448] [2021-10-13 06:44:37,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3653,3666] [2021-10-13 06:44:37,212 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[3929,3942] [2021-10-13 06:44:37,214 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[4147,4160] [2021-10-13 06:44:37,220 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[4717,4730] [2021-10-13 06:44:37,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[4935,4948] [2021-10-13 06:44:37,295 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[15828,15841] [2021-10-13 06:44:37,307 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[16046,16059] [2021-10-13 06:44:37,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[16441,16454] [2021-10-13 06:44:37,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+lhb-reducer.c[16659,16672] [2021-10-13 06:44:37,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:37,340 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:37,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37 WrapperNode [2021-10-13 06:44:37,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:37,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:37,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:37,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:37,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:37,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:37,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:37,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:37,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:37,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:37,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:37,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:37,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (1/1) ... [2021-10-13 06:44:37,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:37,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:37,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:37,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:44:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:38,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:38,423 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 06:44:38,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:38 BoogieIcfgContainer [2021-10-13 06:44:38,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:38,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:38,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:38,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:38,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:36" (1/3) ... [2021-10-13 06:44:38,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ff924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:38, skipping insertion in model container [2021-10-13 06:44:38,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:37" (2/3) ... [2021-10-13 06:44:38,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ff924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:38, skipping insertion in model container [2021-10-13 06:44:38,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:38" (3/3) ... [2021-10-13 06:44:38,437 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2021-10-13 06:44:38,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:38,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-13 06:44:38,501 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:38,508 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:44:38,508 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-13 06:44:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 101 states have (on average 1.9306930693069306) internal successors, (195), 117 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 06:44:38,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:38,538 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 06:44:38,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:38,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:38,546 INFO L82 PathProgramCache]: Analyzing trace with hash 547035891, now seen corresponding path program 1 times [2021-10-13 06:44:38,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:38,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780598204] [2021-10-13 06:44:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:38,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:38,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:38,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780598204] [2021-10-13 06:44:38,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780598204] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:38,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:38,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:44:38,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568193579] [2021-10-13 06:44:38,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:38,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:38,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:38,827 INFO L87 Difference]: Start difference. First operand has 118 states, 101 states have (on average 1.9306930693069306) internal successors, (195), 117 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:39,188 INFO L93 Difference]: Finished difference Result 126 states and 200 transitions. [2021-10-13 06:44:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:39,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 06:44:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:39,207 INFO L225 Difference]: With dead ends: 126 [2021-10-13 06:44:39,207 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 06:44:39,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 06:44:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-13 06:44:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 98 states have (on average 1.3673469387755102) internal successors, (134), 112 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2021-10-13 06:44:39,254 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 6 [2021-10-13 06:44:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:39,254 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2021-10-13 06:44:39,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2021-10-13 06:44:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 06:44:39,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:39,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:39,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:44:39,256 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:39,257 INFO L82 PathProgramCache]: Analyzing trace with hash -221752512, now seen corresponding path program 1 times [2021-10-13 06:44:39,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:39,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984068426] [2021-10-13 06:44:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:39,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:39,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:39,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984068426] [2021-10-13 06:44:39,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984068426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:39,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:39,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 06:44:39,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135197896] [2021-10-13 06:44:39,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:44:39,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:39,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:44:39,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:39,480 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:39,729 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2021-10-13 06:44:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:39,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 06:44:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:39,741 INFO L225 Difference]: With dead ends: 113 [2021-10-13 06:44:39,741 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 06:44:39,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 06:44:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-13 06:44:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 94 states have (on average 1.2765957446808511) internal successors, (120), 107 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:39,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2021-10-13 06:44:39,764 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 7 [2021-10-13 06:44:39,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:39,765 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2021-10-13 06:44:39,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:39,765 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2021-10-13 06:44:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 06:44:39,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:39,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:39,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:44:39,767 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:39,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1948841692, now seen corresponding path program 1 times [2021-10-13 06:44:39,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:39,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471531401] [2021-10-13 06:44:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:39,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:39,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:39,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471531401] [2021-10-13 06:44:39,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471531401] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:39,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:39,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 06:44:39,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47268624] [2021-10-13 06:44:39,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:44:39,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:44:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:39,871 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:40,105 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-10-13 06:44:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:40,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 06:44:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:40,110 INFO L225 Difference]: With dead ends: 108 [2021-10-13 06:44:40,110 INFO L226 Difference]: Without dead ends: 106 [2021-10-13 06:44:40,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-13 06:44:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-13 06:44:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 105 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2021-10-13 06:44:40,134 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 10 [2021-10-13 06:44:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:40,134 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2021-10-13 06:44:40,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2021-10-13 06:44:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 06:44:40,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:40,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:40,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:44:40,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:40,138 INFO L82 PathProgramCache]: Analyzing trace with hash 284554395, now seen corresponding path program 1 times [2021-10-13 06:44:40,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:40,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106713202] [2021-10-13 06:44:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:40,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:40,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:40,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106713202] [2021-10-13 06:44:40,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106713202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:40,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:40,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:44:40,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383719554] [2021-10-13 06:44:40,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:40,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:40,247 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:40,374 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2021-10-13 06:44:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:40,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 06:44:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:40,377 INFO L225 Difference]: With dead ends: 106 [2021-10-13 06:44:40,377 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 06:44:40,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 06:44:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-13 06:44:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 90 states have (on average 1.2666666666666666) internal successors, (114), 101 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2021-10-13 06:44:40,401 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 11 [2021-10-13 06:44:40,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:40,401 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2021-10-13 06:44:40,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2021-10-13 06:44:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 06:44:40,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:40,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 06:44:40,403 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash 246397519, now seen corresponding path program 1 times [2021-10-13 06:44:40,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:40,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004600224] [2021-10-13 06:44:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:40,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:40,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:40,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004600224] [2021-10-13 06:44:40,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004600224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:40,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:40,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 06:44:40,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515479273] [2021-10-13 06:44:40,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:44:40,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:44:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:40,517 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:40,778 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2021-10-13 06:44:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:40,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 06:44:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:40,780 INFO L225 Difference]: With dead ends: 120 [2021-10-13 06:44:40,780 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 06:44:40,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 06:44:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2021-10-13 06:44:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2021-10-13 06:44:40,787 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 12 [2021-10-13 06:44:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:40,787 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2021-10-13 06:44:40,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2021-10-13 06:44:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 06:44:40,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:40,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:40,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 06:44:40,789 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash 248121423, now seen corresponding path program 1 times [2021-10-13 06:44:40,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:40,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592940663] [2021-10-13 06:44:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:40,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:40,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:40,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592940663] [2021-10-13 06:44:40,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592940663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:40,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:40,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 06:44:40,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301271146] [2021-10-13 06:44:40,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:44:40,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:40,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:44:40,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:40,899 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:41,094 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-10-13 06:44:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 06:44:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:41,096 INFO L225 Difference]: With dead ends: 100 [2021-10-13 06:44:41,096 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 06:44:41,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 06:44:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-13 06:44:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 88 states have (on average 1.25) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2021-10-13 06:44:41,101 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 12 [2021-10-13 06:44:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:41,101 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2021-10-13 06:44:41,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2021-10-13 06:44:41,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:44:41,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:41,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:41,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 06:44:41,103 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:41,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:41,103 INFO L82 PathProgramCache]: Analyzing trace with hash -951607394, now seen corresponding path program 1 times [2021-10-13 06:44:41,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:41,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766047858] [2021-10-13 06:44:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:41,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:41,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:41,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766047858] [2021-10-13 06:44:41,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766047858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:41,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:41,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 06:44:41,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589324401] [2021-10-13 06:44:41,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:41,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:41,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:41,228 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:41,462 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-10-13 06:44:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:44:41,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 06:44:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:41,464 INFO L225 Difference]: With dead ends: 135 [2021-10-13 06:44:41,464 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 06:44:41,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 06:44:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 104. [2021-10-13 06:44:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 103 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2021-10-13 06:44:41,470 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 13 [2021-10-13 06:44:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:41,471 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2021-10-13 06:44:41,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2021-10-13 06:44:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:44:41,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:41,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:41,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 06:44:41,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:41,473 INFO L82 PathProgramCache]: Analyzing trace with hash -950060249, now seen corresponding path program 1 times [2021-10-13 06:44:41,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:41,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580955269] [2021-10-13 06:44:41,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:41,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:41,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:41,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580955269] [2021-10-13 06:44:41,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580955269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:41,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:41,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 06:44:41,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971362929] [2021-10-13 06:44:41,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 06:44:41,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 06:44:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:41,526 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:41,746 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2021-10-13 06:44:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:41,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 06:44:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:41,748 INFO L225 Difference]: With dead ends: 125 [2021-10-13 06:44:41,748 INFO L226 Difference]: Without dead ends: 123 [2021-10-13 06:44:41,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-13 06:44:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 102. [2021-10-13 06:44:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.2473118279569892) internal successors, (116), 101 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-10-13 06:44:41,753 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 13 [2021-10-13 06:44:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:41,753 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-10-13 06:44:41,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-10-13 06:44:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:44:41,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:41,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:41,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 06:44:41,755 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:41,755 INFO L82 PathProgramCache]: Analyzing trace with hash -898166314, now seen corresponding path program 1 times [2021-10-13 06:44:41,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:41,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270392580] [2021-10-13 06:44:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:41,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:41,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:41,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270392580] [2021-10-13 06:44:41,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270392580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:41,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:41,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 06:44:41,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795760343] [2021-10-13 06:44:41,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:41,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:41,871 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:42,067 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2021-10-13 06:44:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:44:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 06:44:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:42,069 INFO L225 Difference]: With dead ends: 112 [2021-10-13 06:44:42,069 INFO L226 Difference]: Without dead ends: 108 [2021-10-13 06:44:42,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-13 06:44:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2021-10-13 06:44:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 102 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-10-13 06:44:42,075 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 13 [2021-10-13 06:44:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:42,076 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-10-13 06:44:42,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-10-13 06:44:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 06:44:42,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:42,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:42,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 06:44:42,078 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 612907497, now seen corresponding path program 1 times [2021-10-13 06:44:42,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:42,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672677923] [2021-10-13 06:44:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:42,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:42,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:42,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672677923] [2021-10-13 06:44:42,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672677923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:42,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:42,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 06:44:42,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677033151] [2021-10-13 06:44:42,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:42,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:42,169 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:42,374 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2021-10-13 06:44:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:44:42,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 06:44:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:42,376 INFO L225 Difference]: With dead ends: 130 [2021-10-13 06:44:42,376 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 06:44:42,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 06:44:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 106. [2021-10-13 06:44:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 105 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-10-13 06:44:42,384 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 14 [2021-10-13 06:44:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:42,384 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-10-13 06:44:42,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-10-13 06:44:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 06:44:42,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:42,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:42,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 06:44:42,387 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash 333456161, now seen corresponding path program 1 times [2021-10-13 06:44:42,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:42,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212223121] [2021-10-13 06:44:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:42,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:42,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:42,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212223121] [2021-10-13 06:44:42,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212223121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:42,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:42,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:44:42,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730332411] [2021-10-13 06:44:42,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:42,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:42,432 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:42,506 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2021-10-13 06:44:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:42,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 06:44:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:42,508 INFO L225 Difference]: With dead ends: 106 [2021-10-13 06:44:42,509 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 06:44:42,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 06:44:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-13 06:44:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 103 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2021-10-13 06:44:42,515 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 15 [2021-10-13 06:44:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:42,516 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2021-10-13 06:44:42,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2021-10-13 06:44:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 06:44:42,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:42,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:42,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 06:44:42,518 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:42,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1747210525, now seen corresponding path program 1 times [2021-10-13 06:44:42,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:42,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146110545] [2021-10-13 06:44:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:42,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:42,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:42,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146110545] [2021-10-13 06:44:42,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146110545] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:42,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:42,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:44:42,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161845748] [2021-10-13 06:44:42,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:42,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:42,563 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:42,678 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2021-10-13 06:44:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 06:44:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:42,682 INFO L225 Difference]: With dead ends: 104 [2021-10-13 06:44:42,682 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 06:44:42,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 06:44:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-13 06:44:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 99 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2021-10-13 06:44:42,687 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 16 [2021-10-13 06:44:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:42,688 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2021-10-13 06:44:42,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2021-10-13 06:44:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:44:42,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:42,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:42,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 06:44:42,690 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:42,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:42,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1396602585, now seen corresponding path program 1 times [2021-10-13 06:44:42,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:42,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320073005] [2021-10-13 06:44:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:42,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:42,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:42,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320073005] [2021-10-13 06:44:42,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320073005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:42,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:42,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 06:44:42,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054181702] [2021-10-13 06:44:42,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:42,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:42,795 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:42,994 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2021-10-13 06:44:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:44:42,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 06:44:42,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:42,996 INFO L225 Difference]: With dead ends: 115 [2021-10-13 06:44:42,996 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 06:44:42,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:44:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 06:44:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 96. [2021-10-13 06:44:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 95 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2021-10-13 06:44:43,002 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 17 [2021-10-13 06:44:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:43,003 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2021-10-13 06:44:43,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2021-10-13 06:44:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:44:43,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:43,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:43,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 06:44:43,005 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:43,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1343161505, now seen corresponding path program 1 times [2021-10-13 06:44:43,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:43,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795307793] [2021-10-13 06:44:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:43,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:43,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:43,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795307793] [2021-10-13 06:44:43,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795307793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:43,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:43,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 06:44:43,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249898669] [2021-10-13 06:44:43,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:43,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:43,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:43,120 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:43,299 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2021-10-13 06:44:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:43,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 06:44:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:43,300 INFO L225 Difference]: With dead ends: 96 [2021-10-13 06:44:43,300 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 06:44:43,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:44:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 06:44:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-13 06:44:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 91 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2021-10-13 06:44:43,306 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 17 [2021-10-13 06:44:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:43,306 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2021-10-13 06:44:43,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2021-10-13 06:44:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:44:43,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:43,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:43,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 06:44:43,307 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:43,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1655929480, now seen corresponding path program 1 times [2021-10-13 06:44:43,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:43,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021534162] [2021-10-13 06:44:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:43,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:43,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:43,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021534162] [2021-10-13 06:44:43,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021534162] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:43,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:43,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 06:44:43,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221074517] [2021-10-13 06:44:43,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:43,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:43,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:43,364 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:43,565 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2021-10-13 06:44:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:44:43,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 06:44:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:43,566 INFO L225 Difference]: With dead ends: 102 [2021-10-13 06:44:43,567 INFO L226 Difference]: Without dead ends: 53 [2021-10-13 06:44:43,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:44:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-13 06:44:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-13 06:44:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-10-13 06:44:43,569 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 17 [2021-10-13 06:44:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:43,570 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-10-13 06:44:43,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-10-13 06:44:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 06:44:43,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:43,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:43,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 06:44:43,571 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:43,572 INFO L82 PathProgramCache]: Analyzing trace with hash -789661849, now seen corresponding path program 1 times [2021-10-13 06:44:43,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:43,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846361008] [2021-10-13 06:44:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:43,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:43,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:43,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846361008] [2021-10-13 06:44:43,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846361008] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:43,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:43,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 06:44:43,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144307803] [2021-10-13 06:44:43,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 06:44:43,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:43,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 06:44:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-13 06:44:43,693 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:43,809 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-10-13 06:44:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 06:44:43,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-13 06:44:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:43,810 INFO L225 Difference]: With dead ends: 53 [2021-10-13 06:44:43,810 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 06:44:43,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-13 06:44:43,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 06:44:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-13 06:44:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.0625) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-10-13 06:44:43,813 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 43 [2021-10-13 06:44:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:43,813 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-10-13 06:44:43,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-10-13 06:44:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 06:44:43,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:43,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:43,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 06:44:43,814 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:43,815 INFO L82 PathProgramCache]: Analyzing trace with hash -789645961, now seen corresponding path program 1 times [2021-10-13 06:44:43,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:43,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024334073] [2021-10-13 06:44:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:43,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:43,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:43,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024334073] [2021-10-13 06:44:43,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024334073] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:43,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:43,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 06:44:43,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686086621] [2021-10-13 06:44:43,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 06:44:43,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:43,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 06:44:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-13 06:44:43,966 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:44,108 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-10-13 06:44:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 06:44:44,109 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-13 06:44:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:44,110 INFO L225 Difference]: With dead ends: 58 [2021-10-13 06:44:44,110 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 06:44:44,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-13 06:44:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 06:44:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-10-13 06:44:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-13 06:44:44,114 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2021-10-13 06:44:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:44,114 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-13 06:44:44,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-13 06:44:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 06:44:44,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:44,115 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:44,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 06:44:44,116 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1290290900, now seen corresponding path program 1 times [2021-10-13 06:44:44,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:44,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447804303] [2021-10-13 06:44:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:44,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:44,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:44,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447804303] [2021-10-13 06:44:44,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447804303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:44,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:44,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 06:44:44,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96880590] [2021-10-13 06:44:44,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 06:44:44,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 06:44:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:44,289 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:44,387 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-13 06:44:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:44:44,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 06:44:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:44,388 INFO L225 Difference]: With dead ends: 49 [2021-10-13 06:44:44,388 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 06:44:44,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:44:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 06:44:44,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-13 06:44:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-10-13 06:44:44,390 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 44 [2021-10-13 06:44:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:44,391 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-10-13 06:44:44,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-10-13 06:44:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 06:44:44,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:44,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:44,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 06:44:44,392 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-13 06:44:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:44,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1290783444, now seen corresponding path program 1 times [2021-10-13 06:44:44,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:44,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137481801] [2021-10-13 06:44:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:44,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:44,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:44,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137481801] [2021-10-13 06:44:44,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137481801] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:44,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:44,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 06:44:44,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893910903] [2021-10-13 06:44:44,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 06:44:44,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 06:44:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:44,530 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:44,623 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-13 06:44:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:44:44,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 06:44:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:44,624 INFO L225 Difference]: With dead ends: 49 [2021-10-13 06:44:44,624 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:44:44,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:44:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:44:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:44:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:44:44,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-10-13 06:44:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:44,626 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:44:44,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:44:44,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:44:44,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,630 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,631 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,633 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,633 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:44,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 06:44:44,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:44:44,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:44,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:44,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:44,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:44,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:44,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point L217(lines 217 229) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point L597(lines 597 969) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 991) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point L267(lines 267 275) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 883) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point L581(lines 581 971) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-13 06:44:44,744 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L317(lines 317 994) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 424) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 242) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L103(lines 103 125) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L615(lines 615 626) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L929(lines 929 941) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point L219(line 219) no Hoare annotation was computed. [2021-10-13 06:44:44,745 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 269) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L665(lines 665 963) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L434(lines 434 985) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L269(line 269) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L649(lines 649 965) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 173) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 988) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L22(lines 22 1005) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 492) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L881(lines 881 907) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L171(lines 171 193) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L683(lines 683 694) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L105(line 105) no Hoare annotation was computed. [2021-10-13 06:44:44,746 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 288) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L931(line 931) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L733(lines 733 957) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 234) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L502(lines 502 979) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L205(lines 205 231) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L717(lines 717 959) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L453(lines 453 982) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L860 garLoopResultBuilder]: At program point L932(lines 17 1006) the Hoare annotation is: true [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L866(lines 866 946) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 277) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 207) no Hoare annotation was computed. [2021-10-13 06:44:44,747 INFO L857 garLoopResultBuilder]: For program point L536(lines 536 560) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L883(line 883) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 762) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L801(lines 801 951) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 185) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L157(line 157) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L570(lines 570 973) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L917(lines 917 943) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L785(lines 785 953) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L207(line 207) no Hoare annotation was computed. [2021-10-13 06:44:44,748 INFO L857 garLoopResultBuilder]: For program point L521(lines 521 976) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L853 garLoopResultBuilder]: At program point L868(lines 26 1000) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 0 ULTIMATE.start_main_~main__t~0)) [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L257(line 257) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L604(lines 604 628) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 1000) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L819(lines 819 830) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 895) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L638(lines 638 967) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L919(line 919) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L853(lines 853 947) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 236) no Hoare annotation was computed. [2021-10-13 06:44:44,749 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 970) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 993) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 696) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 145) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 995) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 931) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L853 garLoopResultBuilder]: At program point L904(lines 65 999) the Hoare annotation is: (and (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L706(lines 706 961) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 354) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 117) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L657(lines 657 964) no Hoare annotation was computed. [2021-10-13 06:44:44,750 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 56) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 919) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L860 garLoopResultBuilder]: At program point L1004(lines 22 1005) the Hoare annotation is: true [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L393(lines 393 987) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 764) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 285) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 989) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 955) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 157) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L411(lines 411 422) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L725(lines 725 958) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L857 garLoopResultBuilder]: For program point L461(lines 461 981) no Hoare annotation was computed. [2021-10-13 06:44:44,751 INFO L853 garLoopResultBuilder]: At program point L940(lines 858 947) the Hoare annotation is: (and (<= 9 ULTIMATE.start_main_~main__t~0) (< ULTIMATE.start_main_~main__t~0 (+ ULTIMATE.start_main_~main__tagbuf_len~0 1))) [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L874(lines 874 945) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L808(lines 808 832) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 233) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 999) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L445(lines 445 983) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L115(lines 115 123) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L842(lines 842 949) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L132(lines 132 284) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L479(lines 479 490) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 952) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 283) no Hoare annotation was computed. [2021-10-13 06:44:44,752 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 286) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L529(lines 529 975) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L298(lines 298 997) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L34(lines 34 58) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L513(lines 513 977) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L893(lines 893 905) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 257) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L853 garLoopResultBuilder]: At program point L282(lines 132 284) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 191) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 356) no Hoare annotation was computed. [2021-10-13 06:44:44,753 INFO L857 garLoopResultBuilder]: For program point L547(lines 547 558) no Hoare annotation was computed. [2021-10-13 06:44:44,757 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:44:44,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:44:44 BoogieIcfgContainer [2021-10-13 06:44:44,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:44:44,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:44:44,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:44:44,773 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:44:44,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:38" (3/4) ... [2021-10-13 06:44:44,776 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:44:44,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 06:44:44,794 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 06:44:44,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:44:44,797 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:44:44,890 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:44:44,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:44:44,892 INFO L168 Benchmark]: Toolchain (without parser) took 8105.74 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 73.0 MB in the beginning and 75.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:44,892 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:44,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.15 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 69.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:44,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.13 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 66.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:44,893 INFO L168 Benchmark]: Boogie Preprocessor took 42.69 ms. Allocated memory is still 107.0 MB. Free memory was 66.5 MB in the beginning and 64.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:44,894 INFO L168 Benchmark]: RCFGBuilder took 947.24 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 64.4 MB in the beginning and 96.6 MB in the end (delta: -32.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:44,894 INFO L168 Benchmark]: TraceAbstraction took 6343.21 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 96.0 MB in the beginning and 87.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:44,895 INFO L168 Benchmark]: Witness Printer took 118.28 ms. Allocated memory is still 161.5 MB. Free memory was 87.2 MB in the beginning and 75.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:44,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 107.0 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 544.15 ms. Allocated memory is still 107.0 MB. Free memory was 72.8 MB in the beginning and 69.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.13 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 66.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.69 ms. Allocated memory is still 107.0 MB. Free memory was 66.5 MB in the beginning and 64.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 947.24 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 64.4 MB in the beginning and 96.6 MB in the end (delta: -32.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6343.21 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 96.0 MB in the beginning and 87.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. * Witness Printer took 118.28 ms. Allocated memory is still 161.5 MB. Free memory was 87.2 MB in the beginning and 75.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 105]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 117]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 145]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 157]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 173]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 185]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 207]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 219]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 257]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 269]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 883]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 895]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 919]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 931]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 118 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 6258.3ms, OverallIterations: 19, TraceHistogramMax: 1, EmptinessCheckTime: 25.4ms, AutomataDifference: 3637.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 109.5ms, InitialAbstractionConstructionTime: 17.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1016 SDtfs, 1545 SDslu, 1357 SDs, 0 SdLazy, 3552 SolverSat, 320 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2310.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 559.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=0, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 157.3ms AutomataMinimizationTime, 19 MinimizatonAttempts, 119 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 16 NumberOfFragments, 32 HoareAnnotationTreeSize, 6 FomulaSimplifications, 4430 FormulaSimplificationTreeSizeReduction, 40.6ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 207 FormulaSimplificationTreeSizeReductionInter, 62.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 75.1ms SsaConstructionTime, 392.2ms SatisfiabilityAnalysisTime, 1522.7ms InterpolantComputationTime, 367 NumberOfCodeBlocks, 367 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 348 ConstructedInterpolants, 0 QuantifiedInterpolants, 1284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 858]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t < main__tagbuf_len + 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 06:44:44,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fee0d0-5571-48cb-b00f-014b4fc2a4cb/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...