./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 133ba40f5b51c272364c51a4e246bcd97a40cd88b0bcd4bd92df8f8d6bb23a52 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:39:47,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:39:47,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:39:47,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:39:47,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:39:47,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:39:47,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:39:47,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:39:47,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:39:47,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:39:47,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:39:47,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:39:47,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:39:47,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:39:47,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:39:47,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:39:47,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:39:47,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:39:47,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:39:47,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:39:47,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:39:47,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:39:47,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:39:47,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:39:47,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:39:47,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:39:47,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:39:47,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:39:47,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:39:47,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:39:47,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:39:47,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:39:47,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:39:47,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:39:47,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:39:47,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:39:47,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:39:47,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:39:47,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:39:47,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:39:47,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:39:47,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:39:47,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:39:47,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:39:47,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:39:47,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:39:47,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:39:47,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:39:47,515 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:39:47,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:39:47,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:39:47,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:39:47,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:39:47,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:39:47,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:39:47,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:39:47,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:39:47,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:39:47,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:39:47,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:39:47,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:39:47,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:39:47,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:39:47,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:39:47,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:39:47,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:39:47,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:39:47,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:39:47,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:39:47,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:39:47,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:39:47,523 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:39:47,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:39:47,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:39:47,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 133ba40f5b51c272364c51a4e246bcd97a40cd88b0bcd4bd92df8f8d6bb23a52 [2021-10-21 19:39:47,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:39:47,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:39:47,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:39:47,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:39:47,901 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:39:47,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2021-10-21 19:39:47,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/data/8cd6cd2fa/4a8084d9a51a4c319cc41c4e55d9ae9c/FLAG6d8aa74b9 [2021-10-21 19:39:48,518 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:39:48,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2021-10-21 19:39:48,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/data/8cd6cd2fa/4a8084d9a51a4c319cc41c4e55d9ae9c/FLAG6d8aa74b9 [2021-10-21 19:39:48,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/data/8cd6cd2fa/4a8084d9a51a4c319cc41c4e55d9ae9c [2021-10-21 19:39:48,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:39:48,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:39:48,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:39:48,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:39:48,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:39:48,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:39:48" (1/1) ... [2021-10-21 19:39:48,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@150fe3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:48, skipping insertion in model container [2021-10-21 19:39:48,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:39:48" (1/1) ... [2021-10-21 19:39:48,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:39:48,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:39:49,084 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2021-10-21 19:39:49,091 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2021-10-21 19:39:49,097 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2021-10-21 19:39:49,103 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2021-10-21 19:39:49,110 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2021-10-21 19:39:49,112 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2021-10-21 19:39:49,113 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2021-10-21 19:39:49,115 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2021-10-21 19:39:49,117 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2021-10-21 19:39:49,119 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2021-10-21 19:39:49,121 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2021-10-21 19:39:49,123 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2021-10-21 19:39:49,125 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2021-10-21 19:39:49,126 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2021-10-21 19:39:49,128 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2021-10-21 19:39:49,129 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2021-10-21 19:39:49,131 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2021-10-21 19:39:49,132 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2021-10-21 19:39:49,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:39:49,147 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:39:49,160 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1224,1237] [2021-10-21 19:39:49,162 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1636,1649] [2021-10-21 19:39:49,163 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[1851,1864] [2021-10-21 19:39:49,165 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2384,2397] [2021-10-21 19:39:49,167 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2599,2612] [2021-10-21 19:39:49,173 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[2901,2914] [2021-10-21 19:39:49,175 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3116,3129] [2021-10-21 19:39:49,176 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3386,3399] [2021-10-21 19:39:49,178 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[3604,3617] [2021-10-21 19:39:49,180 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4088,4101] [2021-10-21 19:39:49,181 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4306,4319] [2021-10-21 19:39:49,183 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[4802,4815] [2021-10-21 19:39:49,185 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5203,5216] [2021-10-21 19:39:49,186 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5421,5434] [2021-10-21 19:39:49,188 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[5792,5805] [2021-10-21 19:39:49,189 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6010,6023] [2021-10-21 19:39:49,190 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6296,6309] [2021-10-21 19:39:49,191 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_53573690-d46a-458d-96f8-ff744e176d32/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+lhb-reducer.c[6514,6527] [2021-10-21 19:39:49,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:39:49,206 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:39:49,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49 WrapperNode [2021-10-21 19:39:49,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:39:49,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:39:49,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:39:49,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:39:49,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:39:49,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:39:49,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:39:49,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:39:49,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:39:49,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:39:49,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:39:49,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:39:49,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (1/1) ... [2021-10-21 19:39:49,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:39:49,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:39:49,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:39:49,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:39:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:39:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:39:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:39:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:39:49,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:39:49,728 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:39:49,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:39:49 BoogieIcfgContainer [2021-10-21 19:39:49,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:39:49,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:39:49,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:39:49,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:39:49,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:39:48" (1/3) ... [2021-10-21 19:39:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5449e0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:39:49, skipping insertion in model container [2021-10-21 19:39:49,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:49" (2/3) ... [2021-10-21 19:39:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5449e0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:39:49, skipping insertion in model container [2021-10-21 19:39:49,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:39:49" (3/3) ... [2021-10-21 19:39:49,740 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2021-10-21 19:39:49,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:39:49,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-21 19:39:49,795 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:39:49,801 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-21 19:39:49,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-21 19:39:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 56 states have (on average 1.8571428571428572) internal successors, (104), 74 states have internal predecessors, (104), 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) [2021-10-21 19:39:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:39:49,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:49,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:49,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:49,832 INFO L82 PathProgramCache]: Analyzing trace with hash 123910062, now seen corresponding path program 1 times [2021-10-21 19:39:49,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:49,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718200305] [2021-10-21 19:39:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:49,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:50,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:50,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718200305] [2021-10-21 19:39:50,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718200305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:50,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:50,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:39:50,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126635141] [2021-10-21 19:39:50,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:39:50,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:39:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:39:50,144 INFO L87 Difference]: Start difference. First operand has 75 states, 56 states have (on average 1.8571428571428572) internal successors, (104), 74 states have internal predecessors, (104), 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 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 19:39:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:50,340 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2021-10-21 19:39:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:50,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-21 19:39:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:50,352 INFO L225 Difference]: With dead ends: 123 [2021-10-21 19:39:50,352 INFO L226 Difference]: Without dead ends: 107 [2021-10-21 19:39:50,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-21 19:39:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 69. [2021-10-21 19:39:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 68 states have internal predecessors, (73), 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) [2021-10-21 19:39:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-10-21 19:39:50,414 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 8 [2021-10-21 19:39:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:50,415 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-10-21 19:39:50,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 19:39:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-10-21 19:39:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:39:50,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:50,416 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:50,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:39:50,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:50,418 INFO L82 PathProgramCache]: Analyzing trace with hash 120339118, now seen corresponding path program 1 times [2021-10-21 19:39:50,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:50,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750253634] [2021-10-21 19:39:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:50,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:50,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:50,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750253634] [2021-10-21 19:39:50,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750253634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:50,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:50,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:39:50,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669878107] [2021-10-21 19:39:50,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:39:50,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:39:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:39:50,500 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 19:39:50,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:50,601 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2021-10-21 19:39:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:50,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-21 19:39:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:50,606 INFO L225 Difference]: With dead ends: 107 [2021-10-21 19:39:50,608 INFO L226 Difference]: Without dead ends: 105 [2021-10-21 19:39:50,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:50,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-21 19:39:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 67. [2021-10-21 19:39:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.392156862745098) internal successors, (71), 66 states have internal predecessors, (71), 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) [2021-10-21 19:39:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-10-21 19:39:50,628 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 8 [2021-10-21 19:39:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:50,629 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-21 19:39:50,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-21 19:39:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-10-21 19:39:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:39:50,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:50,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:50,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:39:50,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:50,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2031737892, now seen corresponding path program 1 times [2021-10-21 19:39:50,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:50,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973644855] [2021-10-21 19:39:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:50,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:50,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:50,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973644855] [2021-10-21 19:39:50,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973644855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:50,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:50,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:39:50,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488522831] [2021-10-21 19:39:50,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:39:50,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:50,754 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-21 19:39:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:50,871 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-10-21 19:39:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2021-10-21 19:39:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:50,874 INFO L225 Difference]: With dead ends: 69 [2021-10-21 19:39:50,876 INFO L226 Difference]: Without dead ends: 67 [2021-10-21 19:39:50,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-21 19:39:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2021-10-21 19:39:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.38) internal successors, (69), 64 states have internal predecessors, (69), 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) [2021-10-21 19:39:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-21 19:39:50,889 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 11 [2021-10-21 19:39:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:50,889 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-21 19:39:50,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-21 19:39:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-21 19:39:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:39:50,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:50,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:50,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:39:50,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1271153903, now seen corresponding path program 1 times [2021-10-21 19:39:50,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:50,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845698806] [2021-10-21 19:39:50,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:50,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:50,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:50,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845698806] [2021-10-21 19:39:50,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845698806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:50,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:50,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:39:50,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801306458] [2021-10-21 19:39:50,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:39:50,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:50,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:50,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:50,989 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-21 19:39:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:51,095 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-21 19:39:51,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:51,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2021-10-21 19:39:51,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:51,096 INFO L225 Difference]: With dead ends: 67 [2021-10-21 19:39:51,097 INFO L226 Difference]: Without dead ends: 65 [2021-10-21 19:39:51,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-21 19:39:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-10-21 19:39:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 62 states have internal predecessors, (67), 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) [2021-10-21 19:39:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-10-21 19:39:51,115 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2021-10-21 19:39:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:51,116 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-10-21 19:39:51,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-21 19:39:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-10-21 19:39:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:39:51,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:51,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:51,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:39:51,118 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:51,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1440630601, now seen corresponding path program 1 times [2021-10-21 19:39:51,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:51,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559590899] [2021-10-21 19:39:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:51,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:51,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:51,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559590899] [2021-10-21 19:39:51,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559590899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:51,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:51,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:39:51,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645062617] [2021-10-21 19:39:51,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:39:51,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:39:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:39:51,218 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-21 19:39:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:51,288 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-10-21 19:39:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:39:51,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2021-10-21 19:39:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:51,289 INFO L225 Difference]: With dead ends: 65 [2021-10-21 19:39:51,290 INFO L226 Difference]: Without dead ends: 61 [2021-10-21 19:39:51,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-21 19:39:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-10-21 19:39:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 58 states have internal predecessors, (63), 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) [2021-10-21 19:39:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-10-21 19:39:51,296 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 12 [2021-10-21 19:39:51,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:51,296 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-10-21 19:39:51,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-21 19:39:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-10-21 19:39:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:39:51,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:51,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:51,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:39:51,298 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:51,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:51,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1440142029, now seen corresponding path program 1 times [2021-10-21 19:39:51,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:51,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021839216] [2021-10-21 19:39:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:51,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:51,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:51,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021839216] [2021-10-21 19:39:51,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021839216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:51,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:51,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:39:51,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300506937] [2021-10-21 19:39:51,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:39:51,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:51,384 INFO L87 Difference]: Start difference. First operand 59 states and 63 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) [2021-10-21 19:39:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:51,492 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2021-10-21 19:39:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:51,492 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 [2021-10-21 19:39:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:51,493 INFO L225 Difference]: With dead ends: 95 [2021-10-21 19:39:51,493 INFO L226 Difference]: Without dead ends: 93 [2021-10-21 19:39:51,493 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 [2021-10-21 19:39:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-21 19:39:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 57. [2021-10-21 19:39:51,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 56 states have internal predecessors, (61), 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) [2021-10-21 19:39:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-10-21 19:39:51,498 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 12 [2021-10-21 19:39:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:51,498 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-10-21 19:39:51,499 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) [2021-10-21 19:39:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-10-21 19:39:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:39:51,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:51,499 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:51,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:39:51,500 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1440126141, now seen corresponding path program 1 times [2021-10-21 19:39:51,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:51,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987864183] [2021-10-21 19:39:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:51,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:51,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:51,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987864183] [2021-10-21 19:39:51,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987864183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:51,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:51,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:39:51,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82618184] [2021-10-21 19:39:51,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:39:51,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:51,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:51,549 INFO L87 Difference]: Start difference. First operand 57 states and 61 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) [2021-10-21 19:39:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:51,654 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-10-21 19:39:51,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:51,654 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 [2021-10-21 19:39:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:51,655 INFO L225 Difference]: With dead ends: 100 [2021-10-21 19:39:51,655 INFO L226 Difference]: Without dead ends: 98 [2021-10-21 19:39:51,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-21 19:39:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 55. [2021-10-21 19:39:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 54 states have internal predecessors, (59), 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) [2021-10-21 19:39:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-21 19:39:51,661 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 12 [2021-10-21 19:39:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:51,661 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-21 19:39:51,661 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) [2021-10-21 19:39:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-21 19:39:51,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:39:51,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:51,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:51,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:39:51,663 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:51,663 INFO L82 PathProgramCache]: Analyzing trace with hash -751061257, now seen corresponding path program 1 times [2021-10-21 19:39:51,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:51,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656634840] [2021-10-21 19:39:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:51,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:51,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:51,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656634840] [2021-10-21 19:39:51,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656634840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:51,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:51,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:39:51,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165041136] [2021-10-21 19:39:51,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:39:51,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:39:51,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:39:51,713 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-21 19:39:51,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:51,763 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-10-21 19:39:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:39:51,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2021-10-21 19:39:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:51,765 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:39:51,765 INFO L226 Difference]: Without dead ends: 53 [2021-10-21 19:39:51,765 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 [2021-10-21 19:39:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-21 19:39:51,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-10-21 19:39:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 50 states have internal predecessors, (55), 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) [2021-10-21 19:39:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-10-21 19:39:51,784 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 12 [2021-10-21 19:39:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:51,785 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-21 19:39:51,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-10-21 19:39:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-10-21 19:39:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:39:51,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:51,793 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:51,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:39:51,794 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:51,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1694725733, now seen corresponding path program 1 times [2021-10-21 19:39:51,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:51,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245237784] [2021-10-21 19:39:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:51,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:51,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:51,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245237784] [2021-10-21 19:39:51,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245237784] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:51,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:51,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:39:51,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607606912] [2021-10-21 19:39:51,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:39:51,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:39:51,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:51,895 INFO L87 Difference]: Start difference. First operand 51 states and 55 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) [2021-10-21 19:39:52,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:52,018 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2021-10-21 19:39:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:39:52,019 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 [2021-10-21 19:39:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:52,020 INFO L225 Difference]: With dead ends: 118 [2021-10-21 19:39:52,020 INFO L226 Difference]: Without dead ends: 116 [2021-10-21 19:39:52,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:39:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-21 19:39:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 56. [2021-10-21 19:39:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.326086956521739) internal successors, (61), 55 states have internal predecessors, (61), 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) [2021-10-21 19:39:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-10-21 19:39:52,036 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2021-10-21 19:39:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:52,037 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-10-21 19:39:52,037 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) [2021-10-21 19:39:52,037 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-10-21 19:39:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:39:52,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:52,041 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:52,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:39:52,041 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:52,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:52,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1694233189, now seen corresponding path program 1 times [2021-10-21 19:39:52,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:52,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927306572] [2021-10-21 19:39:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:52,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:52,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:52,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927306572] [2021-10-21 19:39:52,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927306572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:52,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:52,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:39:52,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861051677] [2021-10-21 19:39:52,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:39:52,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:39:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:52,188 INFO L87 Difference]: Start difference. First operand 56 states and 61 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) [2021-10-21 19:39:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:52,289 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2021-10-21 19:39:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:39:52,290 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 [2021-10-21 19:39:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:52,291 INFO L225 Difference]: With dead ends: 116 [2021-10-21 19:39:52,291 INFO L226 Difference]: Without dead ends: 114 [2021-10-21 19:39:52,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:39:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-21 19:39:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 58. [2021-10-21 19:39:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 48 states have (on average 1.3125) internal successors, (63), 57 states have internal predecessors, (63), 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) [2021-10-21 19:39:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-10-21 19:39:52,296 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 13 [2021-10-21 19:39:52,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:52,297 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-10-21 19:39:52,297 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) [2021-10-21 19:39:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-10-21 19:39:52,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:39:52,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:52,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:52,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:39:52,298 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:52,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:52,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1791008026, now seen corresponding path program 1 times [2021-10-21 19:39:52,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:52,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921216249] [2021-10-21 19:39:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:52,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:52,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:52,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921216249] [2021-10-21 19:39:52,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921216249] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:52,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:52,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:39:52,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680294754] [2021-10-21 19:39:52,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:39:52,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:52,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:52,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:52,334 INFO L87 Difference]: Start difference. First operand 58 states and 63 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) [2021-10-21 19:39:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:52,411 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-10-21 19:39:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:52,411 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 [2021-10-21 19:39:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:52,412 INFO L225 Difference]: With dead ends: 76 [2021-10-21 19:39:52,412 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 19:39:52,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 19:39:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2021-10-21 19:39:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.297872340425532) internal successors, (61), 55 states have internal predecessors, (61), 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) [2021-10-21 19:39:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-10-21 19:39:52,422 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 13 [2021-10-21 19:39:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:52,422 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-10-21 19:39:52,422 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) [2021-10-21 19:39:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-10-21 19:39:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:39:52,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:52,423 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:52,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:39:52,424 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:52,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1789284122, now seen corresponding path program 1 times [2021-10-21 19:39:52,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:52,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580062348] [2021-10-21 19:39:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:52,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:52,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:52,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580062348] [2021-10-21 19:39:52,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580062348] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:52,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:52,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:39:52,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817563393] [2021-10-21 19:39:52,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:39:52,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:52,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:52,488 INFO L87 Difference]: Start difference. First operand 56 states and 61 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) [2021-10-21 19:39:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:52,544 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2021-10-21 19:39:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:52,544 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 [2021-10-21 19:39:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:52,545 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:39:52,545 INFO L226 Difference]: Without dead ends: 55 [2021-10-21 19:39:52,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-21 19:39:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-10-21 19:39:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 53 states have internal predecessors, (59), 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) [2021-10-21 19:39:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-10-21 19:39:52,550 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 13 [2021-10-21 19:39:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:52,550 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-10-21 19:39:52,550 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) [2021-10-21 19:39:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-10-21 19:39:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:39:52,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:52,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:52,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 19:39:52,551 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:52,552 INFO L82 PathProgramCache]: Analyzing trace with hash 313330138, now seen corresponding path program 1 times [2021-10-21 19:39:52,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:52,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168664586] [2021-10-21 19:39:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:52,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:52,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:52,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168664586] [2021-10-21 19:39:52,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168664586] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:52,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:52,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:39:52,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108196472] [2021-10-21 19:39:52,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:39:52,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:52,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:39:52,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:52,637 INFO L87 Difference]: Start difference. First operand 54 states and 59 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) [2021-10-21 19:39:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:52,736 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-10-21 19:39:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:39:52,736 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 [2021-10-21 19:39:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:52,738 INFO L225 Difference]: With dead ends: 92 [2021-10-21 19:39:52,738 INFO L226 Difference]: Without dead ends: 90 [2021-10-21 19:39:52,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:39:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-21 19:39:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 60. [2021-10-21 19:39:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 59 states have internal predecessors, (67), 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) [2021-10-21 19:39:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-21 19:39:52,744 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 14 [2021-10-21 19:39:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:52,745 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-21 19:39:52,745 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) [2021-10-21 19:39:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-21 19:39:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:39:52,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:52,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:52,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:39:52,746 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:52,747 INFO L82 PathProgramCache]: Analyzing trace with hash 314877283, now seen corresponding path program 1 times [2021-10-21 19:39:52,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:52,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780565884] [2021-10-21 19:39:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:52,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:52,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:52,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780565884] [2021-10-21 19:39:52,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780565884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:52,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:52,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:39:52,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174025774] [2021-10-21 19:39:52,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:39:52,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:52,788 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-21 19:39:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:52,859 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-10-21 19:39:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:52,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2021-10-21 19:39:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:52,861 INFO L225 Difference]: With dead ends: 80 [2021-10-21 19:39:52,861 INFO L226 Difference]: Without dead ends: 78 [2021-10-21 19:39:52,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-21 19:39:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2021-10-21 19:39:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 57 states have internal predecessors, (65), 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) [2021-10-21 19:39:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-10-21 19:39:52,867 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 14 [2021-10-21 19:39:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:52,867 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-10-21 19:39:52,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-21 19:39:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-10-21 19:39:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:39:52,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:52,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:52,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 19:39:52,869 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:52,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:52,869 INFO L82 PathProgramCache]: Analyzing trace with hash 366771218, now seen corresponding path program 1 times [2021-10-21 19:39:52,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:52,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315208595] [2021-10-21 19:39:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:52,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:52,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:52,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315208595] [2021-10-21 19:39:52,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315208595] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:52,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:52,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:39:52,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131337112] [2021-10-21 19:39:52,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:39:52,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:52,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:39:52,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:52,953 INFO L87 Difference]: Start difference. First operand 58 states and 65 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) [2021-10-21 19:39:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:53,040 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-10-21 19:39:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:39:53,041 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 [2021-10-21 19:39:53,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:53,042 INFO L225 Difference]: With dead ends: 70 [2021-10-21 19:39:53,042 INFO L226 Difference]: Without dead ends: 66 [2021-10-21 19:39:53,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:39:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-21 19:39:53,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2021-10-21 19:39:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 58 states have internal predecessors, (66), 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) [2021-10-21 19:39:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-21 19:39:53,049 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 14 [2021-10-21 19:39:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:53,050 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-21 19:39:53,050 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) [2021-10-21 19:39:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-21 19:39:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:39:53,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:53,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:53,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 19:39:53,051 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:53,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1171265312, now seen corresponding path program 1 times [2021-10-21 19:39:53,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:53,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005833486] [2021-10-21 19:39:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:53,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:53,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:53,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005833486] [2021-10-21 19:39:53,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005833486] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:53,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:53,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:39:53,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410389084] [2021-10-21 19:39:53,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:39:53,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:39:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:53,160 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-10-21 19:39:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:53,251 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2021-10-21 19:39:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:39:53,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 [2021-10-21 19:39:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:53,252 INFO L225 Difference]: With dead ends: 87 [2021-10-21 19:39:53,253 INFO L226 Difference]: Without dead ends: 85 [2021-10-21 19:39:53,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:39:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-21 19:39:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 62. [2021-10-21 19:39:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 61 states have internal predecessors, (69), 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) [2021-10-21 19:39:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2021-10-21 19:39:53,259 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 15 [2021-10-21 19:39:53,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:53,259 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2021-10-21 19:39:53,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-10-21 19:39:53,259 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2021-10-21 19:39:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:39:53,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:53,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:53,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 19:39:53,260 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:53,261 INFO L82 PathProgramCache]: Analyzing trace with hash 462679229, now seen corresponding path program 1 times [2021-10-21 19:39:53,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:53,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017473094] [2021-10-21 19:39:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:53,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:53,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:53,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017473094] [2021-10-21 19:39:53,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017473094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:53,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:53,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:39:53,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141574126] [2021-10-21 19:39:53,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:39:53,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:39:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:39:53,295 INFO L87 Difference]: Start difference. First operand 62 states and 69 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) [2021-10-21 19:39:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:53,321 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-10-21 19:39:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:39:53,322 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 [2021-10-21 19:39:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:53,322 INFO L225 Difference]: With dead ends: 62 [2021-10-21 19:39:53,323 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 19:39:53,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 19:39:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-21 19:39:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 59 states have internal predecessors, (67), 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) [2021-10-21 19:39:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-21 19:39:53,329 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 16 [2021-10-21 19:39:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:53,331 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-21 19:39:53,331 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) [2021-10-21 19:39:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-21 19:39:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:39:53,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:53,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:53,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 19:39:53,333 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:53,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1458158324, now seen corresponding path program 1 times [2021-10-21 19:39:53,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:53,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132069521] [2021-10-21 19:39:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:53,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:53,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:53,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132069521] [2021-10-21 19:39:53,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132069521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:53,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:53,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:39:53,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666414294] [2021-10-21 19:39:53,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:39:53,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:53,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:39:53,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:39:53,378 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-10-21 19:39:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:53,413 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-10-21 19:39:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:39:53,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 [2021-10-21 19:39:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:53,414 INFO L225 Difference]: With dead ends: 60 [2021-10-21 19:39:53,414 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 19:39:53,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 19:39:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-21 19:39:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 55 states have internal predecessors, (63), 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) [2021-10-21 19:39:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2021-10-21 19:39:53,421 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 17 [2021-10-21 19:39:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:53,421 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2021-10-21 19:39:53,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-10-21 19:39:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2021-10-21 19:39:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:39:53,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:53,422 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:53,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 19:39:53,422 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:53,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:53,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1747922500, now seen corresponding path program 1 times [2021-10-21 19:39:53,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:53,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817045187] [2021-10-21 19:39:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:53,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:53,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:53,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817045187] [2021-10-21 19:39:53,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817045187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:39:53,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283979856] [2021-10-21 19:39:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:53,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:39:53,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:39:53,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:39:53,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:39:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:53,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:39:53,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:39:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:53,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283979856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:39:53,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:39:53,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-21 19:39:53,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856777675] [2021-10-21 19:39:53,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:39:53,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:39:53,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:39:53,997 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-21 19:39:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:54,247 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2021-10-21 19:39:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:39:54,248 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 18 [2021-10-21 19:39:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:54,249 INFO L225 Difference]: With dead ends: 121 [2021-10-21 19:39:54,249 INFO L226 Difference]: Without dead ends: 119 [2021-10-21 19:39:54,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 160.9ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:39:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-21 19:39:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 52. [2021-10-21 19:39:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 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) [2021-10-21 19:39:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-10-21 19:39:54,256 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 18 [2021-10-21 19:39:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:54,257 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-10-21 19:39:54,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-21 19:39:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-10-21 19:39:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:39:54,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:54,260 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:54,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:39:54,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:39:54,482 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1748415044, now seen corresponding path program 1 times [2021-10-21 19:39:54,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:54,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370389235] [2021-10-21 19:39:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:54,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:54,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:54,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370389235] [2021-10-21 19:39:54,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370389235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:39:54,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194204871] [2021-10-21 19:39:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:54,546 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:39:54,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:39:54,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:39:54,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:39:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:54,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:39:54,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:39:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:54,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194204871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:39:54,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:39:54,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-21 19:39:54,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906956638] [2021-10-21 19:39:54,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:39:54,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:39:54,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:39:54,931 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-21 19:39:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:55,157 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2021-10-21 19:39:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:39:55,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 18 [2021-10-21 19:39:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:55,159 INFO L225 Difference]: With dead ends: 100 [2021-10-21 19:39:55,159 INFO L226 Difference]: Without dead ends: 98 [2021-10-21 19:39:55,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:39:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-21 19:39:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 45. [2021-10-21 19:39:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 44 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) [2021-10-21 19:39:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-10-21 19:39:55,164 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 18 [2021-10-21 19:39:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:55,165 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-10-21 19:39:55,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-10-21 19:39:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-10-21 19:39:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:39:55,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:55,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:55,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:39:55,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:39:55,382 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2026613132, now seen corresponding path program 1 times [2021-10-21 19:39:55,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:55,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603269634] [2021-10-21 19:39:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:55,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:55,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:55,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603269634] [2021-10-21 19:39:55,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603269634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:55,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:55,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:39:55,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45177198] [2021-10-21 19:39:55,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:39:55,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:39:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:39:55,435 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-21 19:39:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:55,530 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-10-21 19:39:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:39:55,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-10-21 19:39:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:55,531 INFO L225 Difference]: With dead ends: 60 [2021-10-21 19:39:55,531 INFO L226 Difference]: Without dead ends: 58 [2021-10-21 19:39:55,531 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 [2021-10-21 19:39:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-21 19:39:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 40. [2021-10-21 19:39:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 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) [2021-10-21 19:39:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-10-21 19:39:55,536 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 18 [2021-10-21 19:39:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:55,536 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-10-21 19:39:55,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-21 19:39:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-10-21 19:39:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:39:55,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:55,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:55,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-21 19:39:55,537 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash -684716563, now seen corresponding path program 1 times [2021-10-21 19:39:55,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:55,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723785336] [2021-10-21 19:39:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:55,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:55,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:55,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723785336] [2021-10-21 19:39:55,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723785336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:55,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:55,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:39:55,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080205261] [2021-10-21 19:39:55,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:39:55,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:39:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:39:55,602 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 19:39:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:55,672 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-10-21 19:39:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:39:55,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2021-10-21 19:39:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:55,673 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:39:55,673 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 19:39:55,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:39:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 19:39:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2021-10-21 19:39:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 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) [2021-10-21 19:39:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-10-21 19:39:55,678 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2021-10-21 19:39:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:55,678 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-10-21 19:39:55,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 19:39:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-10-21 19:39:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:39:55,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:39:55,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:55,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-21 19:39:55,679 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-21 19:39:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash -631275483, now seen corresponding path program 1 times [2021-10-21 19:39:55,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:55,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986568775] [2021-10-21 19:39:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:55,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:55,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:55,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986568775] [2021-10-21 19:39:55,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986568775] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:55,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:55,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:39:55,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478470336] [2021-10-21 19:39:55,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:39:55,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:39:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:39:55,743 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 19:39:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:55,802 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-10-21 19:39:55,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:39:55,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2021-10-21 19:39:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:39:55,802 INFO L225 Difference]: With dead ends: 35 [2021-10-21 19:39:55,802 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:39:55,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:39:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:39:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:39:55,803 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) [2021-10-21 19:39:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:39:55,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-21 19:39:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:39:55,804 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:39:55,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 19:39:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:39:55,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:39:55,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,808 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:39:55,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-21 19:39:55,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:39:55,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:39:55,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:39:56,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:39:56,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:39:56,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:39:56,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:39:56,646 INFO L857 garLoopResultBuilder]: For program point L126(line 126) no Hoare annotation was computed. [2021-10-21 19:39:56,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2021-10-21 19:39:56,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point L366(line 366) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point L333(line 333) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 242) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 297) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 126) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:39:56,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:39:56,648 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 160) no Hoare annotation was computed. [2021-10-21 19:39:56,648 INFO L857 garLoopResultBuilder]: For program point L309(line 309) no Hoare annotation was computed. [2021-10-21 19:39:56,648 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 401) no Hoare annotation was computed. [2021-10-21 19:39:56,648 INFO L857 garLoopResultBuilder]: For program point L276(lines 276 391) no Hoare annotation was computed. [2021-10-21 19:39:56,648 INFO L860 garLoopResultBuilder]: At program point L400(lines 15 402) the Hoare annotation is: true [2021-10-21 19:39:56,648 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-10-21 19:39:56,648 INFO L857 garLoopResultBuilder]: For program point L70(lines 70 94) no Hoare annotation was computed. [2021-10-21 19:39:56,649 INFO L853 garLoopResultBuilder]: At program point L384(lines 282 391) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and (<= 1 ULTIMATE.start_main_~main__t~0) .cse2) (and .cse2 .cse1))))) (or (and (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse0 .cse1) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~19) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~18 0)) .cse0)))) [2021-10-21 19:39:56,649 INFO L853 garLoopResultBuilder]: At program point L351(lines 32 395) the Hoare annotation is: (let ((.cse4 (<= 0 ULTIMATE.start_main_~main__tagbuf_len~0))) (or (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (let ((.cse3 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse0 (let ((.cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0))) (.cse6 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0))) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0)))) (or (and .cse5 (not (= ULTIMATE.start_main_~main__tagbuf_len~0 0)) .cse3 .cse6 .cse7) (and .cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~19 0)) .cse6 .cse7)))) (.cse1 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17)) (.cse2 (<= 1 ULTIMATE.start_main_~main__t~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse4 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~19)))))) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse4 (= ULTIMATE.start_main_~main__t~0 0)))) [2021-10-21 19:39:56,649 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 196) no Hoare annotation was computed. [2021-10-21 19:39:56,649 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 278) no Hoare annotation was computed. [2021-10-21 19:39:56,649 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 385) no Hoare annotation was computed. [2021-10-21 19:39:56,649 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 352) no Hoare annotation was computed. [2021-10-21 19:39:56,649 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2021-10-21 19:39:56,649 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 203) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point L236(line 236) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 333) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L853 garLoopResultBuilder]: At program point L195(lines 56 253) 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)) [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point L154(line 154) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point L278(line 278) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 378) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 209) no Hoare annotation was computed. [2021-10-21 19:39:56,650 INFO L857 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 255) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point L295(lines 295 317) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point L378(line 378) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point L345(line 345) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 366) no Hoare annotation was computed. [2021-10-21 19:39:56,651 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 395) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 390) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 244) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 188) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 396) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 92) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 162) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point L297(line 297) no Hoare annotation was computed. [2021-10-21 19:39:56,652 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 176) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 201) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L860 garLoopResultBuilder]: At program point L314(lines 32 395) the Hoare annotation is: true [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 250) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 253) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point L174(lines 174 198) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 387) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point L331(lines 331 354) no Hoare annotation was computed. [2021-10-21 19:39:56,653 INFO L857 garLoopResultBuilder]: For program point L265(lines 265 393) no Hoare annotation was computed. [2021-10-21 19:39:56,654 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 200) no Hoare annotation was computed. [2021-10-21 19:39:56,654 INFO L857 garLoopResultBuilder]: For program point L224(line 224) no Hoare annotation was computed. [2021-10-21 19:39:56,654 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 236) no Hoare annotation was computed. [2021-10-21 19:39:56,654 INFO L853 garLoopResultBuilder]: At program point L249(lines 101 251) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (<= 1 ULTIMATE.start_main_~main__t~0)) [2021-10-21 19:39:56,654 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 84) no Hoare annotation was computed. [2021-10-21 19:39:56,654 INFO L857 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2021-10-21 19:39:56,654 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 315) no Hoare annotation was computed. [2021-10-21 19:39:56,654 INFO L857 garLoopResultBuilder]: For program point L142(line 142) no Hoare annotation was computed. [2021-10-21 19:39:56,655 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 309) no Hoare annotation was computed. [2021-10-21 19:39:56,655 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 251) no Hoare annotation was computed. [2021-10-21 19:39:56,655 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 389) no Hoare annotation was computed. [2021-10-21 19:39:56,659 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:39:56,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:39:56 BoogieIcfgContainer [2021-10-21 19:39:56,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:39:56,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:39:56,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:39:56,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:39:56,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:39:49" (3/4) ... [2021-10-21 19:39:56,683 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:39:56,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 19:39:56,698 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:39:56,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:39:56,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:39:56,769 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:39:56,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:39:56,771 INFO L168 Benchmark]: Toolchain (without parser) took 7916.09 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 69.6 MB in the beginning and 37.2 MB in the end (delta: 32.4 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:39:56,772 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 86.0 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:39:56,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.00 ms. Allocated memory is still 111.1 MB. Free memory was 69.4 MB in the beginning and 79.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:39:56,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.92 ms. Allocated memory is still 111.1 MB. Free memory was 79.9 MB in the beginning and 77.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:39:56,773 INFO L168 Benchmark]: Boogie Preprocessor took 37.68 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 76.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:39:56,773 INFO L168 Benchmark]: RCFGBuilder took 435.45 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 62.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:39:56,774 INFO L168 Benchmark]: TraceAbstraction took 6946.39 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 61.7 MB in the beginning and 43.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:39:56,774 INFO L168 Benchmark]: Witness Printer took 90.26 ms. Allocated memory is still 140.5 MB. Free memory was 43.5 MB in the beginning and 37.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:39:56,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 86.0 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.00 ms. Allocated memory is still 111.1 MB. Free memory was 69.4 MB in the beginning and 79.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.92 ms. Allocated memory is still 111.1 MB. Free memory was 79.9 MB in the beginning and 77.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.68 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 76.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 435.45 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 62.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6946.39 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 61.7 MB in the beginning and 43.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.1 GB. * Witness Printer took 90.26 ms. Allocated memory is still 140.5 MB. Free memory was 43.5 MB in the beginning and 37.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 84]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 126]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 142]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 154]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 176]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 188]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 224]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 236]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 278]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 297]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 309]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 366]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 378]: 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, 75 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 6866.2ms, OverallIterations: 23, TraceHistogramMax: 2, EmptinessCheckTime: 34.8ms, AutomataDifference: 2448.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 835.8ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1028 SDtfs, 1618 SDslu, 1765 SDs, 0 SdLazy, 2051 SolverSat, 197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1329.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 743.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=0, InterpolantAutomatonStates: 142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 194.4ms AutomataMinimizationTime, 23 MinimizatonAttempts, 531 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 192 HoareAnnotationTreeSize, 6 FomulaSimplifications, 10686158 FormulaSimplificationTreeSizeReduction, 331.1ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 2506650 FormulaSimplificationTreeSizeReductionInter, 496.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.0ms SsaConstructionTime, 355.8ms SatisfiabilityAnalysisTime, 1974.8ms InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1519 SizeOfPredicates, 6 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 25 InterpolantComputations, 21 PerfectInterpolantSequences, 4/16 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 18 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (main__t < main__tagbuf_len && ((((((((((!(__VERIFIER_assert__cond == 0) && !(main__tagbuf_len == 0)) && main__t <= 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))) && 1 <= __VERIFIER_assert__cond) && 1 <= main__t) && main__t <= 1) && 0 <= main__tagbuf_len) || (((((((((!(__VERIFIER_assert__cond == 0) && !(main__tagbuf_len == 0)) && main__t <= 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))) && 1 <= __VERIFIER_assert__cond) && 1 <= main__t) && 0 <= main__tagbuf_len) && 1 <= __VERIFIER_assert__cond))) || ((!(main__t == main__tagbuf_len) && 0 <= main__tagbuf_len) && main__t == 0) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: (((main__t <= main__tagbuf_len && !(main__t == main__tagbuf_len)) && ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && main__t == 0))) && main__t == 0) || (((main__t < main__tagbuf_len && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && ((1 <= main__t && !(__VERIFIER_assert__cond == 0)) || (!(__VERIFIER_assert__cond == 0) && main__t == 0))) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:39:56,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53573690-d46a-458d-96f8-ff744e176d32/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...