./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY --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 a6a02224ad3116421a031fb474928d71f99a366daf138bf7c752aaea303a81f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:48:52,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:48:52,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:48:52,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:48:52,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:48:52,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:48:52,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:48:52,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:48:52,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:48:52,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:48:52,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:48:52,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:48:52,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:48:52,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:48:52,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:48:52,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:48:52,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:48:52,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:48:52,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:48:52,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:48:52,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:48:52,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:48:52,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:48:52,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:48:52,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:48:52,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:48:52,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:48:52,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:48:52,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:48:52,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:48:52,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:48:52,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:48:52,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:48:52,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:48:52,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:48:52,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:48:52,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:48:52,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:48:52,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:48:52,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:48:52,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:48:52,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:48:52,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:48:52,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:48:52,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:48:52,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:48:52,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:48:52,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:48:52,517 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:48:52,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:48:52,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:48:52,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:48:52,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:48:52,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:48:52,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:48:52,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:48:52,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:48:52,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:48:52,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:48:52,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:48:52,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:48:52,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:48:52,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:48:52,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:48:52,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:48:52,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:48:52,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:48:52,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:48:52,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:48:52,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:48:52,522 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:48:52,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:48:52,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:48:52,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:48:52,522 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_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6a02224ad3116421a031fb474928d71f99a366daf138bf7c752aaea303a81f9 [2021-11-07 07:48:52,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:48:52,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:48:52,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:48:52,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:48:52,815 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:48:52,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-07 07:48:52,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/data/46ce0e46e/1536c40e8172457b97138ef85d213444/FLAG0406afbc5 [2021-11-07 07:48:53,401 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:48:53,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-07 07:48:53,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/data/46ce0e46e/1536c40e8172457b97138ef85d213444/FLAG0406afbc5 [2021-11-07 07:48:53,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/data/46ce0e46e/1536c40e8172457b97138ef85d213444 [2021-11-07 07:48:53,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:48:53,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:48:53,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:48:53,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:48:53,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:48:53,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:48:53" (1/1) ... [2021-11-07 07:48:53,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4faf536f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:53, skipping insertion in model container [2021-11-07 07:48:53,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:48:53" (1/1) ... [2021-11-07 07:48:53,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:48:53,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:48:54,085 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7117,7130] [2021-11-07 07:48:54,105 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9784,9797] [2021-11-07 07:48:54,114 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10875,10888] [2021-11-07 07:48:54,120 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11481,11494] [2021-11-07 07:48:54,131 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12900,12913] [2021-11-07 07:48:54,144 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13506,13519] [2021-11-07 07:48:54,151 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14435,14448] [2021-11-07 07:48:54,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:48:54,220 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:48:54,293 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7117,7130] [2021-11-07 07:48:54,317 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9784,9797] [2021-11-07 07:48:54,335 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10875,10888] [2021-11-07 07:48:54,339 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11481,11494] [2021-11-07 07:48:54,358 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12900,12913] [2021-11-07 07:48:54,365 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13506,13519] [2021-11-07 07:48:54,370 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_e48895bd-283c-4190-a616-5a48b998e05d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14435,14448] [2021-11-07 07:48:54,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:48:54,440 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:48:54,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54 WrapperNode [2021-11-07 07:48:54,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:48:54,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:48:54,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:48:54,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:48:54,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:48:54,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:48:54,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:48:54,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:48:54,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:48:54,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:48:54,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:48:54,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:48:54,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (1/1) ... [2021-11-07 07:48:54,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:48:54,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:48:54,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:48:54,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:48:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:48:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:48:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:48:54,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:48:55,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:48:55,928 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 07:48:55,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:48:55 BoogieIcfgContainer [2021-11-07 07:48:55,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:48:55,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:48:55,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:48:55,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:48:55,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:48:53" (1/3) ... [2021-11-07 07:48:55,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889dfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:48:55, skipping insertion in model container [2021-11-07 07:48:55,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:54" (2/3) ... [2021-11-07 07:48:55,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889dfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:48:55, skipping insertion in model container [2021-11-07 07:48:55,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:48:55" (3/3) ... [2021-11-07 07:48:55,944 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-07 07:48:55,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:48:55,955 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 07:48:56,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:48:56,030 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 [2021-11-07 07:48:56,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 07:48:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 198 states have (on average 1.8232323232323233) internal successors, (361), 205 states have internal predecessors, (361), 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) [2021-11-07 07:48:56,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 07:48:56,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:56,058 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:48:56,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:48:56,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1899747950, now seen corresponding path program 1 times [2021-11-07 07:48:56,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:56,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481315363] [2021-11-07 07:48:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:56,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:48:56,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:56,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481315363] [2021-11-07 07:48:56,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481315363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:48:56,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:48:56,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:48:56,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382444309] [2021-11-07 07:48:56,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:48:56,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:48:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:48:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:48:56,578 INFO L87 Difference]: Start difference. First operand has 206 states, 198 states have (on average 1.8232323232323233) internal successors, (361), 205 states have internal predecessors, (361), 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 5 states, 5 states have (on average 9.2) internal successors, (46), 4 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) [2021-11-07 07:48:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:48:56,963 INFO L93 Difference]: Finished difference Result 338 states and 568 transitions. [2021-11-07 07:48:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:48:56,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 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) Word has length 46 [2021-11-07 07:48:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:48:56,983 INFO L225 Difference]: With dead ends: 338 [2021-11-07 07:48:56,984 INFO L226 Difference]: Without dead ends: 183 [2021-11-07 07:48:56,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:48:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-07 07:48:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-07 07:48:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 176 states have (on average 1.2784090909090908) internal successors, (225), 182 states have internal predecessors, (225), 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) [2021-11-07 07:48:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 225 transitions. [2021-11-07 07:48:57,067 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 225 transitions. Word has length 46 [2021-11-07 07:48:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:48:57,068 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 225 transitions. [2021-11-07 07:48:57,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 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) [2021-11-07 07:48:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 225 transitions. [2021-11-07 07:48:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 07:48:57,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:57,079 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:48:57,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:48:57,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:48:57,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash 640694395, now seen corresponding path program 1 times [2021-11-07 07:48:57,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:57,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587072598] [2021-11-07 07:48:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:57,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:48:57,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:57,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587072598] [2021-11-07 07:48:57,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587072598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:48:57,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:48:57,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:48:57,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182647960] [2021-11-07 07:48:57,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:48:57,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:48:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:48:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:48:57,263 INFO L87 Difference]: Start difference. First operand 183 states and 225 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-07 07:48:57,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:48:57,430 INFO L93 Difference]: Finished difference Result 306 states and 387 transitions. [2021-11-07 07:48:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:48:57,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2021-11-07 07:48:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:48:57,438 INFO L225 Difference]: With dead ends: 306 [2021-11-07 07:48:57,439 INFO L226 Difference]: Without dead ends: 164 [2021-11-07 07:48:57,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:48:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-07 07:48:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-07 07:48:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 157 states have (on average 1.2929936305732483) internal successors, (203), 163 states have internal predecessors, (203), 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) [2021-11-07 07:48:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 203 transitions. [2021-11-07 07:48:57,466 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 203 transitions. Word has length 47 [2021-11-07 07:48:57,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:48:57,467 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 203 transitions. [2021-11-07 07:48:57,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-07 07:48:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 203 transitions. [2021-11-07 07:48:57,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 07:48:57,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:57,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:48:57,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:48:57,471 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:48:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1668920151, now seen corresponding path program 1 times [2021-11-07 07:48:57,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:57,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390328937] [2021-11-07 07:48:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:57,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:48:57,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:57,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390328937] [2021-11-07 07:48:57,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390328937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:48:57,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:48:57,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:48:57,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311238547] [2021-11-07 07:48:57,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:48:57,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:48:57,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:48:57,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:48:57,605 INFO L87 Difference]: Start difference. First operand 164 states and 203 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-07 07:48:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:48:57,834 INFO L93 Difference]: Finished difference Result 366 states and 468 transitions. [2021-11-07 07:48:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:48:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2021-11-07 07:48:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:48:57,838 INFO L225 Difference]: With dead ends: 366 [2021-11-07 07:48:57,839 INFO L226 Difference]: Without dead ends: 235 [2021-11-07 07:48:57,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:48:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-07 07:48:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 217. [2021-11-07 07:48:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.3476190476190477) internal successors, (283), 216 states have internal predecessors, (283), 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) [2021-11-07 07:48:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 283 transitions. [2021-11-07 07:48:57,882 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 283 transitions. Word has length 48 [2021-11-07 07:48:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:48:57,883 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 283 transitions. [2021-11-07 07:48:57,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-07 07:48:57,885 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 283 transitions. [2021-11-07 07:48:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 07:48:57,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:57,889 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:48:57,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:48:57,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:48:57,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:57,896 INFO L85 PathProgramCache]: Analyzing trace with hash -453133940, now seen corresponding path program 1 times [2021-11-07 07:48:57,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:57,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706401460] [2021-11-07 07:48:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:57,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:48:58,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:58,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706401460] [2021-11-07 07:48:58,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706401460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:48:58,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:48:58,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:48:58,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086661726] [2021-11-07 07:48:58,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:48:58,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:48:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:48:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:48:58,209 INFO L87 Difference]: Start difference. First operand 217 states and 283 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:48:58,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:48:58,885 INFO L93 Difference]: Finished difference Result 411 states and 558 transitions. [2021-11-07 07:48:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:48:58,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 07:48:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:48:58,890 INFO L225 Difference]: With dead ends: 411 [2021-11-07 07:48:58,890 INFO L226 Difference]: Without dead ends: 406 [2021-11-07 07:48:58,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:48:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-07 07:48:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 217. [2021-11-07 07:48:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.3428571428571427) internal successors, (282), 216 states have internal predecessors, (282), 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) [2021-11-07 07:48:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-07 07:48:58,918 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 49 [2021-11-07 07:48:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:48:58,918 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-07 07:48:58,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:48:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-07 07:48:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 07:48:58,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:58,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:48:58,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:48:58,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:48:58,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1459063162, now seen corresponding path program 1 times [2021-11-07 07:48:58,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:58,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461709629] [2021-11-07 07:48:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:58,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:48:59,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:59,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461709629] [2021-11-07 07:48:59,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461709629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:48:59,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:48:59,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:48:59,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806841744] [2021-11-07 07:48:59,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:48:59,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:48:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:48:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:48:59,118 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:48:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:48:59,847 INFO L93 Difference]: Finished difference Result 628 states and 876 transitions. [2021-11-07 07:48:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:48:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 07:48:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:48:59,852 INFO L225 Difference]: With dead ends: 628 [2021-11-07 07:48:59,853 INFO L226 Difference]: Without dead ends: 528 [2021-11-07 07:48:59,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:48:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-07 07:48:59,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 217. [2021-11-07 07:48:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.338095238095238) internal successors, (281), 216 states have internal predecessors, (281), 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) [2021-11-07 07:48:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 281 transitions. [2021-11-07 07:48:59,883 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 281 transitions. Word has length 49 [2021-11-07 07:48:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:48:59,884 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 281 transitions. [2021-11-07 07:48:59,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:48:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 281 transitions. [2021-11-07 07:48:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 07:48:59,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:59,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:48:59,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:48:59,887 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:48:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash 8857914, now seen corresponding path program 1 times [2021-11-07 07:48:59,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:59,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127024383] [2021-11-07 07:48:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:59,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:00,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:00,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127024383] [2021-11-07 07:49:00,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127024383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:00,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:00,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 07:49:00,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676186256] [2021-11-07 07:49:00,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:49:00,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:00,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:49:00,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:49:00,036 INFO L87 Difference]: Start difference. First operand 217 states and 281 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:00,457 INFO L93 Difference]: Finished difference Result 472 states and 628 transitions. [2021-11-07 07:49:00,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:49:00,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 07:49:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:00,463 INFO L225 Difference]: With dead ends: 472 [2021-11-07 07:49:00,464 INFO L226 Difference]: Without dead ends: 336 [2021-11-07 07:49:00,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:49:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-07 07:49:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 217. [2021-11-07 07:49:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.3333333333333333) internal successors, (280), 216 states have internal predecessors, (280), 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) [2021-11-07 07:49:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 280 transitions. [2021-11-07 07:49:00,508 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 280 transitions. Word has length 49 [2021-11-07 07:49:00,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:00,509 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 280 transitions. [2021-11-07 07:49:00,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 280 transitions. [2021-11-07 07:49:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 07:49:00,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:00,512 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:00,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:49:00,513 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1308237609, now seen corresponding path program 1 times [2021-11-07 07:49:00,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:00,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133860796] [2021-11-07 07:49:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:00,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:01,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:01,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133860796] [2021-11-07 07:49:01,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133860796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:01,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:01,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 07:49:01,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253699141] [2021-11-07 07:49:01,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:49:01,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:49:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:49:01,213 INFO L87 Difference]: Start difference. First operand 217 states and 280 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) [2021-11-07 07:49:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:03,100 INFO L93 Difference]: Finished difference Result 539 states and 707 transitions. [2021-11-07 07:49:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:49:03,101 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) Word has length 51 [2021-11-07 07:49:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:03,105 INFO L225 Difference]: With dead ends: 539 [2021-11-07 07:49:03,105 INFO L226 Difference]: Without dead ends: 535 [2021-11-07 07:49:03,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:49:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-07 07:49:03,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 227. [2021-11-07 07:49:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 220 states have (on average 1.3409090909090908) internal successors, (295), 226 states have internal predecessors, (295), 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) [2021-11-07 07:49:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 295 transitions. [2021-11-07 07:49:03,138 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 295 transitions. Word has length 51 [2021-11-07 07:49:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:03,139 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 295 transitions. [2021-11-07 07:49:03,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) [2021-11-07 07:49:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 295 transitions. [2021-11-07 07:49:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 07:49:03,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:03,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:03,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:49:03,141 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:03,142 INFO L85 PathProgramCache]: Analyzing trace with hash 766441193, now seen corresponding path program 1 times [2021-11-07 07:49:03,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:03,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963951634] [2021-11-07 07:49:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:03,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:03,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:03,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963951634] [2021-11-07 07:49:03,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963951634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:03,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:03,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 07:49:03,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526571851] [2021-11-07 07:49:03,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:49:03,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:49:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:49:03,822 INFO L87 Difference]: Start difference. First operand 227 states and 295 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) [2021-11-07 07:49:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:06,437 INFO L93 Difference]: Finished difference Result 709 states and 966 transitions. [2021-11-07 07:49:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:49:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) Word has length 51 [2021-11-07 07:49:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:06,444 INFO L225 Difference]: With dead ends: 709 [2021-11-07 07:49:06,445 INFO L226 Difference]: Without dead ends: 622 [2021-11-07 07:49:06,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=267, Invalid=993, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:49:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-07 07:49:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 225. [2021-11-07 07:49:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 218 states have (on average 1.334862385321101) internal successors, (291), 224 states have internal predecessors, (291), 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) [2021-11-07 07:49:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 291 transitions. [2021-11-07 07:49:06,481 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 291 transitions. Word has length 51 [2021-11-07 07:49:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:06,481 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 291 transitions. [2021-11-07 07:49:06,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) [2021-11-07 07:49:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 291 transitions. [2021-11-07 07:49:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 07:49:06,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:06,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:06,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 07:49:06,484 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1014075955, now seen corresponding path program 1 times [2021-11-07 07:49:06,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:06,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109339146] [2021-11-07 07:49:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:06,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:07,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:07,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109339146] [2021-11-07 07:49:07,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109339146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:07,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:07,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 07:49:07,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024141838] [2021-11-07 07:49:07,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:49:07,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:07,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:49:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:49:07,108 INFO L87 Difference]: Start difference. First operand 225 states and 291 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) [2021-11-07 07:49:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:08,876 INFO L93 Difference]: Finished difference Result 716 states and 991 transitions. [2021-11-07 07:49:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 07:49:08,880 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) Word has length 51 [2021-11-07 07:49:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:08,884 INFO L225 Difference]: With dead ends: 716 [2021-11-07 07:49:08,884 INFO L226 Difference]: Without dead ends: 710 [2021-11-07 07:49:08,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:49:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-07 07:49:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 225. [2021-11-07 07:49:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 218 states have (on average 1.3302752293577982) internal successors, (290), 224 states have internal predecessors, (290), 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) [2021-11-07 07:49:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 290 transitions. [2021-11-07 07:49:08,921 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 290 transitions. Word has length 51 [2021-11-07 07:49:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:08,921 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 290 transitions. [2021-11-07 07:49:08,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 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) [2021-11-07 07:49:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 290 transitions. [2021-11-07 07:49:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 07:49:08,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:08,923 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:08,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 07:49:08,923 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash -480854780, now seen corresponding path program 1 times [2021-11-07 07:49:08,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:08,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501936029] [2021-11-07 07:49:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:08,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:09,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:09,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501936029] [2021-11-07 07:49:09,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501936029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:09,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:09,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 07:49:09,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177974272] [2021-11-07 07:49:09,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:49:09,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:49:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:49:09,209 INFO L87 Difference]: Start difference. First operand 225 states and 290 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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) [2021-11-07 07:49:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:09,722 INFO L93 Difference]: Finished difference Result 641 states and 880 transitions. [2021-11-07 07:49:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:49:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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) Word has length 51 [2021-11-07 07:49:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:09,726 INFO L225 Difference]: With dead ends: 641 [2021-11-07 07:49:09,726 INFO L226 Difference]: Without dead ends: 519 [2021-11-07 07:49:09,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:49:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-07 07:49:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 186. [2021-11-07 07:49:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.3406593406593406) internal successors, (244), 185 states have internal predecessors, (244), 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) [2021-11-07 07:49:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 244 transitions. [2021-11-07 07:49:09,767 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 244 transitions. Word has length 51 [2021-11-07 07:49:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 244 transitions. [2021-11-07 07:49:09,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 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) [2021-11-07 07:49:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 244 transitions. [2021-11-07 07:49:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 07:49:09,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:09,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:09,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 07:49:09,770 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1185149594, now seen corresponding path program 1 times [2021-11-07 07:49:09,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:09,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377282849] [2021-11-07 07:49:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:09,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:09,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:09,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377282849] [2021-11-07 07:49:09,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377282849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:09,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:09,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:49:09,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84374169] [2021-11-07 07:49:09,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:49:09,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:09,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:49:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:09,918 INFO L87 Difference]: Start difference. First operand 186 states and 244 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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) [2021-11-07 07:49:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:10,241 INFO L93 Difference]: Finished difference Result 244 states and 321 transitions. [2021-11-07 07:49:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:49:10,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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 52 [2021-11-07 07:49:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:10,243 INFO L225 Difference]: With dead ends: 244 [2021-11-07 07:49:10,243 INFO L226 Difference]: Without dead ends: 237 [2021-11-07 07:49:10,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:49:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-07 07:49:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 186. [2021-11-07 07:49:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.3296703296703296) internal successors, (242), 185 states have internal predecessors, (242), 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) [2021-11-07 07:49:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 242 transitions. [2021-11-07 07:49:10,275 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 242 transitions. Word has length 52 [2021-11-07 07:49:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:10,276 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 242 transitions. [2021-11-07 07:49:10,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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) [2021-11-07 07:49:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 242 transitions. [2021-11-07 07:49:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 07:49:10,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:10,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:10,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 07:49:10,277 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1721906586, now seen corresponding path program 1 times [2021-11-07 07:49:10,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:10,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128016825] [2021-11-07 07:49:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:10,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:10,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:10,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128016825] [2021-11-07 07:49:10,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128016825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:10,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:10,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 07:49:10,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263760863] [2021-11-07 07:49:10,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:49:10,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:49:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:49:10,407 INFO L87 Difference]: Start difference. First operand 186 states and 242 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 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) [2021-11-07 07:49:11,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:11,325 INFO L93 Difference]: Finished difference Result 734 states and 1026 transitions. [2021-11-07 07:49:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:49:11,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 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 52 [2021-11-07 07:49:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:11,333 INFO L225 Difference]: With dead ends: 734 [2021-11-07 07:49:11,333 INFO L226 Difference]: Without dead ends: 633 [2021-11-07 07:49:11,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:49:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-07 07:49:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 186. [2021-11-07 07:49:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.3241758241758241) internal successors, (241), 185 states have internal predecessors, (241), 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) [2021-11-07 07:49:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 241 transitions. [2021-11-07 07:49:11,395 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 241 transitions. Word has length 52 [2021-11-07 07:49:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:11,396 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 241 transitions. [2021-11-07 07:49:11,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 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) [2021-11-07 07:49:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 241 transitions. [2021-11-07 07:49:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 07:49:11,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:11,397 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:11,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 07:49:11,397 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash -314743810, now seen corresponding path program 1 times [2021-11-07 07:49:11,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:11,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505866926] [2021-11-07 07:49:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:11,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:11,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:11,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505866926] [2021-11-07 07:49:11,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505866926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:11,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:11,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 07:49:11,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956893191] [2021-11-07 07:49:11,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:49:11,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:49:11,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:49:11,706 INFO L87 Difference]: Start difference. First operand 186 states and 241 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-11-07 07:49:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:12,564 INFO L93 Difference]: Finished difference Result 491 states and 681 transitions. [2021-11-07 07:49:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:49:12,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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 52 [2021-11-07 07:49:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:12,567 INFO L225 Difference]: With dead ends: 491 [2021-11-07 07:49:12,568 INFO L226 Difference]: Without dead ends: 471 [2021-11-07 07:49:12,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:49:12,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-07 07:49:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 164. [2021-11-07 07:49:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.3271604938271604) internal successors, (215), 163 states have internal predecessors, (215), 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) [2021-11-07 07:49:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 215 transitions. [2021-11-07 07:49:12,608 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 215 transitions. Word has length 52 [2021-11-07 07:49:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:12,608 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 215 transitions. [2021-11-07 07:49:12,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-11-07 07:49:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 215 transitions. [2021-11-07 07:49:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 07:49:12,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:12,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:12,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 07:49:12,613 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash -988369889, now seen corresponding path program 1 times [2021-11-07 07:49:12,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:12,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117345625] [2021-11-07 07:49:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:12,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:12,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:12,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117345625] [2021-11-07 07:49:12,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117345625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:12,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:12,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:49:12,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850769471] [2021-11-07 07:49:12,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:49:12,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:49:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:12,721 INFO L87 Difference]: Start difference. First operand 164 states and 215 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:13,055 INFO L93 Difference]: Finished difference Result 386 states and 531 transitions. [2021-11-07 07:49:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:49:13,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 07:49:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:13,057 INFO L225 Difference]: With dead ends: 386 [2021-11-07 07:49:13,058 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 07:49:13,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:49:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 07:49:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 160. [2021-11-07 07:49:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 1.3291139240506329) internal successors, (210), 159 states have internal predecessors, (210), 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) [2021-11-07 07:49:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 210 transitions. [2021-11-07 07:49:13,092 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 210 transitions. Word has length 53 [2021-11-07 07:49:13,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:13,092 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 210 transitions. [2021-11-07 07:49:13,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 210 transitions. [2021-11-07 07:49:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 07:49:13,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:13,094 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:13,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 07:49:13,094 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1899159370, now seen corresponding path program 1 times [2021-11-07 07:49:13,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:13,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738156771] [2021-11-07 07:49:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:13,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:13,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:13,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738156771] [2021-11-07 07:49:13,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738156771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:13,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:13,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 07:49:13,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080884437] [2021-11-07 07:49:13,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:49:13,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:13,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:49:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:49:13,449 INFO L87 Difference]: Start difference. First operand 160 states and 210 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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) [2021-11-07 07:49:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:14,693 INFO L93 Difference]: Finished difference Result 559 states and 784 transitions. [2021-11-07 07:49:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 07:49:14,694 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 54 [2021-11-07 07:49:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:14,697 INFO L225 Difference]: With dead ends: 559 [2021-11-07 07:49:14,697 INFO L226 Difference]: Without dead ends: 463 [2021-11-07 07:49:14,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:49:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-07 07:49:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 171. [2021-11-07 07:49:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.319526627218935) internal successors, (223), 170 states have internal predecessors, (223), 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) [2021-11-07 07:49:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2021-11-07 07:49:14,740 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 54 [2021-11-07 07:49:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:14,741 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2021-11-07 07:49:14,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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) [2021-11-07 07:49:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2021-11-07 07:49:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 07:49:14,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:14,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:14,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 07:49:14,742 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:14,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2098262835, now seen corresponding path program 1 times [2021-11-07 07:49:14,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:14,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748477005] [2021-11-07 07:49:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:14,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:15,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:15,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748477005] [2021-11-07 07:49:15,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748477005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:15,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:15,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 07:49:15,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585073279] [2021-11-07 07:49:15,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:49:15,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:49:15,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:49:15,222 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 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) [2021-11-07 07:49:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:17,145 INFO L93 Difference]: Finished difference Result 647 states and 912 transitions. [2021-11-07 07:49:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:49:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 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) Word has length 55 [2021-11-07 07:49:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:17,150 INFO L225 Difference]: With dead ends: 647 [2021-11-07 07:49:17,150 INFO L226 Difference]: Without dead ends: 641 [2021-11-07 07:49:17,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:49:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-07 07:49:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 178. [2021-11-07 07:49:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 176 states have (on average 1.3181818181818181) internal successors, (232), 177 states have internal predecessors, (232), 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) [2021-11-07 07:49:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 232 transitions. [2021-11-07 07:49:17,201 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 232 transitions. Word has length 55 [2021-11-07 07:49:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:17,201 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 232 transitions. [2021-11-07 07:49:17,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 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) [2021-11-07 07:49:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 232 transitions. [2021-11-07 07:49:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 07:49:17,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:17,203 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:17,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 07:49:17,203 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1345030097, now seen corresponding path program 1 times [2021-11-07 07:49:17,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:17,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235426037] [2021-11-07 07:49:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:17,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:17,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:17,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235426037] [2021-11-07 07:49:17,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235426037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:17,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:17,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 07:49:17,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342729687] [2021-11-07 07:49:17,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:49:17,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:49:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:49:17,715 INFO L87 Difference]: Start difference. First operand 178 states and 232 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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) [2021-11-07 07:49:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:18,937 INFO L93 Difference]: Finished difference Result 491 states and 692 transitions. [2021-11-07 07:49:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:49:18,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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) Word has length 55 [2021-11-07 07:49:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:18,940 INFO L225 Difference]: With dead ends: 491 [2021-11-07 07:49:18,941 INFO L226 Difference]: Without dead ends: 485 [2021-11-07 07:49:18,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:49:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-11-07 07:49:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 177. [2021-11-07 07:49:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 176 states have internal predecessors, (230), 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) [2021-11-07 07:49:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 230 transitions. [2021-11-07 07:49:19,002 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 230 transitions. Word has length 55 [2021-11-07 07:49:19,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:19,002 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 230 transitions. [2021-11-07 07:49:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 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) [2021-11-07 07:49:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 230 transitions. [2021-11-07 07:49:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:49:19,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:19,004 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:19,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 07:49:19,004 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2096401114, now seen corresponding path program 1 times [2021-11-07 07:49:19,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:19,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143227797] [2021-11-07 07:49:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:19,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:19,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:19,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143227797] [2021-11-07 07:49:19,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143227797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:19,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:19,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 07:49:19,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630474285] [2021-11-07 07:49:19,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:49:19,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:49:19,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:49:19,327 INFO L87 Difference]: Start difference. First operand 177 states and 230 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2021-11-07 07:49:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:20,454 INFO L93 Difference]: Finished difference Result 624 states and 890 transitions. [2021-11-07 07:49:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:49:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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 56 [2021-11-07 07:49:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:20,458 INFO L225 Difference]: With dead ends: 624 [2021-11-07 07:49:20,458 INFO L226 Difference]: Without dead ends: 618 [2021-11-07 07:49:20,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:49:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-11-07 07:49:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 164. [2021-11-07 07:49:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.3190184049079754) internal successors, (215), 163 states have internal predecessors, (215), 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) [2021-11-07 07:49:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 215 transitions. [2021-11-07 07:49:20,524 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 215 transitions. Word has length 56 [2021-11-07 07:49:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:20,524 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 215 transitions. [2021-11-07 07:49:20,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 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) [2021-11-07 07:49:20,525 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 215 transitions. [2021-11-07 07:49:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:49:20,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:20,526 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:20,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 07:49:20,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1406506919, now seen corresponding path program 1 times [2021-11-07 07:49:20,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:20,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210549413] [2021-11-07 07:49:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:20,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:20,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:20,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210549413] [2021-11-07 07:49:20,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210549413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:20,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:20,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:20,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300915386] [2021-11-07 07:49:20,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:20,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:20,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:20,588 INFO L87 Difference]: Start difference. First operand 164 states and 215 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2021-11-07 07:49:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:20,905 INFO L93 Difference]: Finished difference Result 662 states and 971 transitions. [2021-11-07 07:49:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:49:20,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2021-11-07 07:49:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:20,909 INFO L225 Difference]: With dead ends: 662 [2021-11-07 07:49:20,910 INFO L226 Difference]: Without dead ends: 579 [2021-11-07 07:49:20,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:49:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-07 07:49:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 245. [2021-11-07 07:49:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.3770491803278688) internal successors, (336), 244 states have internal predecessors, (336), 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) [2021-11-07 07:49:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 336 transitions. [2021-11-07 07:49:21,002 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 336 transitions. Word has length 72 [2021-11-07 07:49:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:21,003 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 336 transitions. [2021-11-07 07:49:21,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2021-11-07 07:49:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 336 transitions. [2021-11-07 07:49:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 07:49:21,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:21,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:21,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 07:49:21,005 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1673936966, now seen corresponding path program 1 times [2021-11-07 07:49:21,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:21,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873185986] [2021-11-07 07:49:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:21,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:21,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:21,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873185986] [2021-11-07 07:49:21,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873185986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:21,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:21,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:21,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839642552] [2021-11-07 07:49:21,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:21,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:21,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:21,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:21,078 INFO L87 Difference]: Start difference. First operand 245 states and 336 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-07 07:49:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:21,526 INFO L93 Difference]: Finished difference Result 901 states and 1308 transitions. [2021-11-07 07:49:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:49:21,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2021-11-07 07:49:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:21,530 INFO L225 Difference]: With dead ends: 901 [2021-11-07 07:49:21,531 INFO L226 Difference]: Without dead ends: 737 [2021-11-07 07:49:21,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-07 07:49:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 427. [2021-11-07 07:49:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.4225352112676057) internal successors, (606), 426 states have internal predecessors, (606), 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) [2021-11-07 07:49:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 606 transitions. [2021-11-07 07:49:21,691 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 606 transitions. Word has length 74 [2021-11-07 07:49:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:21,692 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 606 transitions. [2021-11-07 07:49:21,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-07 07:49:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 606 transitions. [2021-11-07 07:49:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 07:49:21,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:21,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:21,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 07:49:21,695 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1695280855, now seen corresponding path program 1 times [2021-11-07 07:49:21,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:21,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601146299] [2021-11-07 07:49:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:21,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:21,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:21,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601146299] [2021-11-07 07:49:21,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601146299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:21,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:21,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:21,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235409725] [2021-11-07 07:49:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:21,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:21,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:21,745 INFO L87 Difference]: Start difference. First operand 427 states and 606 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-07 07:49:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:21,954 INFO L93 Difference]: Finished difference Result 775 states and 1124 transitions. [2021-11-07 07:49:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-07 07:49:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:21,958 INFO L225 Difference]: With dead ends: 775 [2021-11-07 07:49:21,958 INFO L226 Difference]: Without dead ends: 429 [2021-11-07 07:49:21,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-07 07:49:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2021-11-07 07:49:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.4131455399061033) internal successors, (602), 426 states have internal predecessors, (602), 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) [2021-11-07 07:49:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 602 transitions. [2021-11-07 07:49:22,115 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 602 transitions. Word has length 74 [2021-11-07 07:49:22,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:22,115 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 602 transitions. [2021-11-07 07:49:22,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-07 07:49:22,116 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 602 transitions. [2021-11-07 07:49:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 07:49:22,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:22,117 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:22,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 07:49:22,118 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:22,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1859946120, now seen corresponding path program 1 times [2021-11-07 07:49:22,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:22,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584513456] [2021-11-07 07:49:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:22,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:22,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:22,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584513456] [2021-11-07 07:49:22,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584513456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:22,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:22,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:22,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813478740] [2021-11-07 07:49:22,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:22,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:22,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:22,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:22,168 INFO L87 Difference]: Start difference. First operand 427 states and 602 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-07 07:49:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:22,457 INFO L93 Difference]: Finished difference Result 1067 states and 1540 transitions. [2021-11-07 07:49:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-07 07:49:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:22,464 INFO L225 Difference]: With dead ends: 1067 [2021-11-07 07:49:22,464 INFO L226 Difference]: Without dead ends: 721 [2021-11-07 07:49:22,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-11-07 07:49:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 711. [2021-11-07 07:49:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.4056338028169013) internal successors, (998), 710 states have internal predecessors, (998), 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) [2021-11-07 07:49:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 998 transitions. [2021-11-07 07:49:22,765 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 998 transitions. Word has length 74 [2021-11-07 07:49:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:22,765 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 998 transitions. [2021-11-07 07:49:22,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-07 07:49:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 998 transitions. [2021-11-07 07:49:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 07:49:22,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:22,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:22,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 07:49:22,768 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1889765056, now seen corresponding path program 1 times [2021-11-07 07:49:22,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:22,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79377865] [2021-11-07 07:49:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:22,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:22,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:22,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79377865] [2021-11-07 07:49:22,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79377865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:22,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:22,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:22,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434756976] [2021-11-07 07:49:22,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:22,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:22,834 INFO L87 Difference]: Start difference. First operand 711 states and 998 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-07 07:49:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:23,847 INFO L93 Difference]: Finished difference Result 2507 states and 3576 transitions. [2021-11-07 07:49:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:49:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2021-11-07 07:49:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:23,858 INFO L225 Difference]: With dead ends: 2507 [2021-11-07 07:49:23,858 INFO L226 Difference]: Without dead ends: 1877 [2021-11-07 07:49:23,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2021-11-07 07:49:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1179. [2021-11-07 07:49:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 1.400679117147708) internal successors, (1650), 1178 states have internal predecessors, (1650), 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) [2021-11-07 07:49:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1650 transitions. [2021-11-07 07:49:24,398 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1650 transitions. Word has length 74 [2021-11-07 07:49:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:24,398 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1650 transitions. [2021-11-07 07:49:24,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-07 07:49:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1650 transitions. [2021-11-07 07:49:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 07:49:24,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:24,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:24,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 07:49:24,401 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1073266559, now seen corresponding path program 1 times [2021-11-07 07:49:24,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:24,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088092920] [2021-11-07 07:49:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:24,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:24,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:24,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088092920] [2021-11-07 07:49:24,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088092920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:24,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:24,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:24,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733154504] [2021-11-07 07:49:24,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:24,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:24,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:24,473 INFO L87 Difference]: Start difference. First operand 1179 states and 1650 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 07:49:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:25,015 INFO L93 Difference]: Finished difference Result 2183 states and 3068 transitions. [2021-11-07 07:49:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-07 07:49:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:25,022 INFO L225 Difference]: With dead ends: 2183 [2021-11-07 07:49:25,023 INFO L226 Difference]: Without dead ends: 1085 [2021-11-07 07:49:25,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-11-07 07:49:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 881. [2021-11-07 07:49:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.365909090909091) internal successors, (1202), 880 states have internal predecessors, (1202), 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) [2021-11-07 07:49:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1202 transitions. [2021-11-07 07:49:25,478 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1202 transitions. Word has length 75 [2021-11-07 07:49:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:25,478 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1202 transitions. [2021-11-07 07:49:25,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 07:49:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1202 transitions. [2021-11-07 07:49:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 07:49:25,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:25,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:25,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 07:49:25,480 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1257423323, now seen corresponding path program 1 times [2021-11-07 07:49:25,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:25,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873731253] [2021-11-07 07:49:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:25,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:25,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:25,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873731253] [2021-11-07 07:49:25,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873731253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:25,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:25,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:49:25,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396957879] [2021-11-07 07:49:25,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:25,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:25,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:25,528 INFO L87 Difference]: Start difference. First operand 881 states and 1202 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-07 07:49:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:25,966 INFO L93 Difference]: Finished difference Result 1704 states and 2344 transitions. [2021-11-07 07:49:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2021-11-07 07:49:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:25,971 INFO L225 Difference]: With dead ends: 1704 [2021-11-07 07:49:25,971 INFO L226 Difference]: Without dead ends: 904 [2021-11-07 07:49:25,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:25,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-07 07:49:26,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 868. [2021-11-07 07:49:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.3690888119953863) internal successors, (1187), 867 states have internal predecessors, (1187), 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) [2021-11-07 07:49:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1187 transitions. [2021-11-07 07:49:26,358 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1187 transitions. Word has length 76 [2021-11-07 07:49:26,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:26,358 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1187 transitions. [2021-11-07 07:49:26,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-07 07:49:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1187 transitions. [2021-11-07 07:49:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 07:49:26,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:26,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:26,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 07:49:26,361 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:26,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash -391890934, now seen corresponding path program 1 times [2021-11-07 07:49:26,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:26,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984828283] [2021-11-07 07:49:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:26,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:26,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:26,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984828283] [2021-11-07 07:49:26,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984828283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:26,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:26,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:26,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556157804] [2021-11-07 07:49:26,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:26,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:26,418 INFO L87 Difference]: Start difference. First operand 868 states and 1187 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-07 07:49:26,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:26,929 INFO L93 Difference]: Finished difference Result 2376 states and 3261 transitions. [2021-11-07 07:49:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:26,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-07 07:49:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:26,938 INFO L225 Difference]: With dead ends: 2376 [2021-11-07 07:49:26,938 INFO L226 Difference]: Without dead ends: 1576 [2021-11-07 07:49:26,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-11-07 07:49:27,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1434. [2021-11-07 07:49:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 1.3600837404047452) internal successors, (1949), 1433 states have internal predecessors, (1949), 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) [2021-11-07 07:49:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1949 transitions. [2021-11-07 07:49:27,582 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1949 transitions. Word has length 76 [2021-11-07 07:49:27,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:27,582 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 1949 transitions. [2021-11-07 07:49:27,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-11-07 07:49:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1949 transitions. [2021-11-07 07:49:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:49:27,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:27,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:27,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 07:49:27,584 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1183434290, now seen corresponding path program 1 times [2021-11-07 07:49:27,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:27,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033493343] [2021-11-07 07:49:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:27,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:27,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:27,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033493343] [2021-11-07 07:49:27,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033493343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:27,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:27,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 07:49:27,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511830342] [2021-11-07 07:49:27,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:49:27,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:49:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:49:27,656 INFO L87 Difference]: Start difference. First operand 1434 states and 1949 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-07 07:49:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:28,740 INFO L93 Difference]: Finished difference Result 2558 states and 3460 transitions. [2021-11-07 07:49:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:49:28,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 77 [2021-11-07 07:49:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:28,750 INFO L225 Difference]: With dead ends: 2558 [2021-11-07 07:49:28,750 INFO L226 Difference]: Without dead ends: 2556 [2021-11-07 07:49:28,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-07 07:49:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1506. [2021-11-07 07:49:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.3348837209302327) internal successors, (2009), 1505 states have internal predecessors, (2009), 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) [2021-11-07 07:49:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2009 transitions. [2021-11-07 07:49:29,348 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2009 transitions. Word has length 77 [2021-11-07 07:49:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:29,349 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2009 transitions. [2021-11-07 07:49:29,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-07 07:49:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2009 transitions. [2021-11-07 07:49:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:49:29,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:29,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:29,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 07:49:29,351 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash -696816699, now seen corresponding path program 1 times [2021-11-07 07:49:29,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:29,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131429293] [2021-11-07 07:49:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:29,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:29,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:29,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131429293] [2021-11-07 07:49:29,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131429293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:29,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:29,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:29,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181319867] [2021-11-07 07:49:29,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:29,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:29,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:29,403 INFO L87 Difference]: Start difference. First operand 1506 states and 2009 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-11-07 07:49:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:30,349 INFO L93 Difference]: Finished difference Result 3462 states and 4627 transitions. [2021-11-07 07:49:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:49:30,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2021-11-07 07:49:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:30,360 INFO L225 Difference]: With dead ends: 3462 [2021-11-07 07:49:30,360 INFO L226 Difference]: Without dead ends: 2024 [2021-11-07 07:49:30,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:49:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-07 07:49:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1462. [2021-11-07 07:49:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 1.3066392881587954) internal successors, (1909), 1461 states have internal predecessors, (1909), 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) [2021-11-07 07:49:30,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1909 transitions. [2021-11-07 07:49:30,888 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1909 transitions. Word has length 77 [2021-11-07 07:49:30,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:30,888 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 1909 transitions. [2021-11-07 07:49:30,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-11-07 07:49:30,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1909 transitions. [2021-11-07 07:49:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 07:49:30,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:30,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:30,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 07:49:30,890 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:30,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1657778714, now seen corresponding path program 1 times [2021-11-07 07:49:30,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:30,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422718894] [2021-11-07 07:49:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:30,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:30,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:30,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422718894] [2021-11-07 07:49:30,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422718894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:30,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:30,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:30,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894613141] [2021-11-07 07:49:30,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:30,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:30,932 INFO L87 Difference]: Start difference. First operand 1462 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-07 07:49:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:31,705 INFO L93 Difference]: Finished difference Result 3074 states and 4029 transitions. [2021-11-07 07:49:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-07 07:49:31,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:31,713 INFO L225 Difference]: With dead ends: 3074 [2021-11-07 07:49:31,713 INFO L226 Difference]: Without dead ends: 1680 [2021-11-07 07:49:31,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2021-11-07 07:49:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1630. [2021-11-07 07:49:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 1.2971147943523633) internal successors, (2113), 1629 states have internal predecessors, (2113), 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) [2021-11-07 07:49:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2113 transitions. [2021-11-07 07:49:32,342 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2113 transitions. Word has length 78 [2021-11-07 07:49:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:32,343 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 2113 transitions. [2021-11-07 07:49:32,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-07 07:49:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2113 transitions. [2021-11-07 07:49:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 07:49:32,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:32,345 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:32,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 07:49:32,345 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:32,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1031001969, now seen corresponding path program 1 times [2021-11-07 07:49:32,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:32,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76742679] [2021-11-07 07:49:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:32,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 07:49:32,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:32,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76742679] [2021-11-07 07:49:32,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76742679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:32,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:32,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:32,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784511375] [2021-11-07 07:49:32,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:32,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:32,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:32,415 INFO L87 Difference]: Start difference. First operand 1630 states and 2113 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-11-07 07:49:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:34,289 INFO L93 Difference]: Finished difference Result 7058 states and 9174 transitions. [2021-11-07 07:49:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:34,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 97 [2021-11-07 07:49:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:34,313 INFO L225 Difference]: With dead ends: 7058 [2021-11-07 07:49:34,313 INFO L226 Difference]: Without dead ends: 5496 [2021-11-07 07:49:34,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:49:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-11-07 07:49:35,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 3190. [2021-11-07 07:49:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3189 states have (on average 1.2941360928190655) internal successors, (4127), 3189 states have internal predecessors, (4127), 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) [2021-11-07 07:49:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4127 transitions. [2021-11-07 07:49:35,478 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4127 transitions. Word has length 97 [2021-11-07 07:49:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:35,478 INFO L470 AbstractCegarLoop]: Abstraction has 3190 states and 4127 transitions. [2021-11-07 07:49:35,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-11-07 07:49:35,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4127 transitions. [2021-11-07 07:49:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 07:49:35,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:35,480 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:35,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 07:49:35,481 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1762267243, now seen corresponding path program 1 times [2021-11-07 07:49:35,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:35,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555047445] [2021-11-07 07:49:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:35,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 07:49:35,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:35,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555047445] [2021-11-07 07:49:35,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555047445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:35,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:35,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:35,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929692391] [2021-11-07 07:49:35,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:35,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:35,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:35,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:35,548 INFO L87 Difference]: Start difference. First operand 3190 states and 4127 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-07 07:49:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:37,968 INFO L93 Difference]: Finished difference Result 8618 states and 11188 transitions. [2021-11-07 07:49:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 97 [2021-11-07 07:49:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:37,984 INFO L225 Difference]: With dead ends: 8618 [2021-11-07 07:49:37,984 INFO L226 Difference]: Without dead ends: 7056 [2021-11-07 07:49:37,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:49:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2021-11-07 07:49:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 5490. [2021-11-07 07:49:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5490 states, 5489 states have (on average 1.2905811623246493) internal successors, (7084), 5489 states have internal predecessors, (7084), 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) [2021-11-07 07:49:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 7084 transitions. [2021-11-07 07:49:40,101 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 7084 transitions. Word has length 97 [2021-11-07 07:49:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:40,101 INFO L470 AbstractCegarLoop]: Abstraction has 5490 states and 7084 transitions. [2021-11-07 07:49:40,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-07 07:49:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 7084 transitions. [2021-11-07 07:49:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 07:49:40,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:40,105 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:40,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 07:49:40,105 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2015781535, now seen corresponding path program 1 times [2021-11-07 07:49:40,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:40,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876796767] [2021-11-07 07:49:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:40,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:49:40,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:40,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876796767] [2021-11-07 07:49:40,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876796767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:40,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:40,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:49:40,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353540225] [2021-11-07 07:49:40,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:49:40,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:49:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:40,181 INFO L87 Difference]: Start difference. First operand 5490 states and 7084 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2021-11-07 07:49:43,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:43,346 INFO L93 Difference]: Finished difference Result 10178 states and 13202 transitions. [2021-11-07 07:49:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 98 [2021-11-07 07:49:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:43,362 INFO L225 Difference]: With dead ends: 10178 [2021-11-07 07:49:43,362 INFO L226 Difference]: Without dead ends: 8616 [2021-11-07 07:49:43,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:49:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2021-11-07 07:49:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 7050. [2021-11-07 07:49:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7050 states, 7049 states have (on average 1.2906795290112072) internal successors, (9098), 7049 states have internal predecessors, (9098), 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) [2021-11-07 07:49:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 9098 transitions. [2021-11-07 07:49:45,863 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 9098 transitions. Word has length 98 [2021-11-07 07:49:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:45,864 INFO L470 AbstractCegarLoop]: Abstraction has 7050 states and 9098 transitions. [2021-11-07 07:49:45,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2021-11-07 07:49:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 9098 transitions. [2021-11-07 07:49:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 07:49:45,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:45,867 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:45,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 07:49:45,867 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash 910821393, now seen corresponding path program 1 times [2021-11-07 07:49:45,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:45,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832352130] [2021-11-07 07:49:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:45,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:45,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:45,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832352130] [2021-11-07 07:49:45,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832352130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:45,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:45,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:45,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147473897] [2021-11-07 07:49:45,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:45,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:45,915 INFO L87 Difference]: Start difference. First operand 7050 states and 9098 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-07 07:49:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:48,774 INFO L93 Difference]: Finished difference Result 13458 states and 17259 transitions. [2021-11-07 07:49:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:48,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 99 [2021-11-07 07:49:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:48,793 INFO L225 Difference]: With dead ends: 13458 [2021-11-07 07:49:48,793 INFO L226 Difference]: Without dead ends: 6476 [2021-11-07 07:49:48,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2021-11-07 07:49:51,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 6474. [2021-11-07 07:49:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 6473 states have (on average 1.2498068901591226) internal successors, (8090), 6473 states have internal predecessors, (8090), 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) [2021-11-07 07:49:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 8090 transitions. [2021-11-07 07:49:51,759 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 8090 transitions. Word has length 99 [2021-11-07 07:49:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:51,760 INFO L470 AbstractCegarLoop]: Abstraction has 6474 states and 8090 transitions. [2021-11-07 07:49:51,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-11-07 07:49:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 8090 transitions. [2021-11-07 07:49:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 07:49:51,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:51,763 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:49:51,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 07:49:51,763 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:49:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash 412335050, now seen corresponding path program 1 times [2021-11-07 07:49:51,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:51,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908446424] [2021-11-07 07:49:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:51,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:51,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:51,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908446424] [2021-11-07 07:49:51,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908446424] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:49:51,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965325673] [2021-11-07 07:49:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:51,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:49:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:49:51,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:49:51,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:49:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:52,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:49:52,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:49:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:49:53,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965325673] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:49:53,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:49:53,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-07 07:49:53,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973608968] [2021-11-07 07:49:53,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:49:53,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:53,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:49:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:49:53,641 INFO L87 Difference]: Start difference. First operand 6474 states and 8090 transitions. Second operand has 20 states, 20 states have (on average 9.2) internal successors, (184), 19 states have internal predecessors, (184), 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) [2021-11-07 07:50:28,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:50:28,974 INFO L93 Difference]: Finished difference Result 60928 states and 75639 transitions. [2021-11-07 07:50:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-11-07 07:50:28,975 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.2) internal successors, (184), 19 states have internal predecessors, (184), 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 99 [2021-11-07 07:50:28,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:50:29,108 INFO L225 Difference]: With dead ends: 60928 [2021-11-07 07:50:29,109 INFO L226 Difference]: Without dead ends: 54522 [2021-11-07 07:50:29,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10025 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4111, Invalid=21971, Unknown=0, NotChecked=0, Total=26082 [2021-11-07 07:50:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54522 states. [2021-11-07 07:50:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54522 to 25851. [2021-11-07 07:50:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25851 states, 25850 states have (on average 1.2454158607350096) internal successors, (32194), 25850 states have internal predecessors, (32194), 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) [2021-11-07 07:50:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25851 states to 25851 states and 32194 transitions. [2021-11-07 07:50:41,655 INFO L78 Accepts]: Start accepts. Automaton has 25851 states and 32194 transitions. Word has length 99 [2021-11-07 07:50:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:50:41,656 INFO L470 AbstractCegarLoop]: Abstraction has 25851 states and 32194 transitions. [2021-11-07 07:50:41,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.2) internal successors, (184), 19 states have internal predecessors, (184), 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) [2021-11-07 07:50:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 25851 states and 32194 transitions. [2021-11-07 07:50:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 07:50:41,661 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:50:41,662 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:50:41,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:50:41,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 07:50:41,876 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:50:41,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:50:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1279457798, now seen corresponding path program 1 times [2021-11-07 07:50:41,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:50:41,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296997981] [2021-11-07 07:50:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:50:41,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:50:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:50:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 07:50:42,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:50:42,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296997981] [2021-11-07 07:50:42,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296997981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:50:42,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:50:42,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:50:42,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165327621] [2021-11-07 07:50:42,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:50:42,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:50:42,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:50:42,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:50:42,056 INFO L87 Difference]: Start difference. First operand 25851 states and 32194 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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) [2021-11-07 07:51:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:51:08,503 INFO L93 Difference]: Finished difference Result 80126 states and 99424 transitions. [2021-11-07 07:51:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:51:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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 100 [2021-11-07 07:51:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:51:08,613 INFO L225 Difference]: With dead ends: 80126 [2021-11-07 07:51:08,613 INFO L226 Difference]: Without dead ends: 54352 [2021-11-07 07:51:08,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:51:08,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54352 states. [2021-11-07 07:51:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54352 to 25851. [2021-11-07 07:51:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25851 states, 25850 states have (on average 1.2452998065764023) internal successors, (32191), 25850 states have internal predecessors, (32191), 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) [2021-11-07 07:51:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25851 states to 25851 states and 32191 transitions. [2021-11-07 07:51:21,720 INFO L78 Accepts]: Start accepts. Automaton has 25851 states and 32191 transitions. Word has length 100 [2021-11-07 07:51:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:51:21,720 INFO L470 AbstractCegarLoop]: Abstraction has 25851 states and 32191 transitions. [2021-11-07 07:51:21,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 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) [2021-11-07 07:51:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 25851 states and 32191 transitions. [2021-11-07 07:51:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 07:51:21,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:51:21,727 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:51:21,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 07:51:21,727 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 07:51:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:51:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash 34146867, now seen corresponding path program 1 times [2021-11-07 07:51:21,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:51:21,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205527590] [2021-11-07 07:51:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:51:21,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:51:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:51:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:51:22,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:51:22,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205527590] [2021-11-07 07:51:22,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205527590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:51:22,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404603095] [2021-11-07 07:51:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:51:22,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:51:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:51:22,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:51:22,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48895bd-283c-4190-a616-5a48b998e05d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:51:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:51:22,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:51:22,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:51:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:51:23,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404603095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:51:23,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:51:23,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-07 07:51:23,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162226252] [2021-11-07 07:51:23,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:51:23,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:51:23,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:51:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:51:23,886 INFO L87 Difference]: Start difference. First operand 25851 states and 32191 transitions. Second operand has 20 states, 20 states have (on average 8.65) internal successors, (173), 19 states have internal predecessors, (173), 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) [2021-11-07 07:52:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:23,250 INFO L93 Difference]: Finished difference Result 113917 states and 139708 transitions. [2021-11-07 07:52:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-11-07 07:52:23,251 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.65) internal successors, (173), 19 states have internal predecessors, (173), 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 102 [2021-11-07 07:52:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:23,393 INFO L225 Difference]: With dead ends: 113917 [2021-11-07 07:52:23,393 INFO L226 Difference]: Without dead ends: 88155 [2021-11-07 07:52:23,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6694 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=3299, Invalid=16723, Unknown=0, NotChecked=0, Total=20022 [2021-11-07 07:52:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88155 states.