./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX --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 8903dcb91a7500453f98b743541ef164d589c2f5828e51ac11fb5ea90b79c3dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:50:05,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:50:05,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:50:05,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:50:05,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:50:05,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:50:05,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:50:05,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:50:05,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:50:05,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:50:05,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:50:05,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:50:05,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:50:05,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:50:05,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:50:05,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:50:05,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:50:05,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:50:05,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:50:05,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:50:05,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:50:05,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:50:05,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:50:05,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:50:05,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:50:05,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:50:05,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:50:05,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:50:05,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:50:05,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:50:05,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:50:05,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:50:05,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:50:05,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:50:05,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:50:05,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:50:05,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:50:05,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:50:05,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:50:05,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:50:05,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:50:05,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:50:05,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:50:05,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:50:05,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:50:05,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:50:05,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:50:05,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:50:05,566 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:50:05,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:50:05,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:50:05,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:50:05,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:50:05,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:50:05,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:50:05,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:50:05,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:50:05,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:50:05,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:50:05,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:50:05,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:50:05,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:50:05,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:50:05,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:50:05,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:50:05,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:50:05,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:50:05,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:50:05,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:50:05,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:50:05,571 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:50:05,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:50:05,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:50:05,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:50:05,571 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_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8903dcb91a7500453f98b743541ef164d589c2f5828e51ac11fb5ea90b79c3dd [2021-11-09 09:50:05,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:50:05,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:50:05,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:50:05,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:50:05,891 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:50:05,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-09 09:50:05,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/data/dece6ad1f/2dee2044afc84fbda955b9ed98c48288/FLAG7139319ac [2021-11-09 09:50:06,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:50:06,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-09 09:50:06,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/data/dece6ad1f/2dee2044afc84fbda955b9ed98c48288/FLAG7139319ac [2021-11-09 09:50:06,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/data/dece6ad1f/2dee2044afc84fbda955b9ed98c48288 [2021-11-09 09:50:06,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:50:06,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:50:06,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:50:06,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:50:06,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:50:06,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:50:06" (1/1) ... [2021-11-09 09:50:06,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de8f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:06, skipping insertion in model container [2021-11-09 09:50:06,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:50:06" (1/1) ... [2021-11-09 09:50:06,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:50:06,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:50:07,247 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2021-11-09 09:50:07,285 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2021-11-09 09:50:07,309 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2021-11-09 09:50:07,316 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2021-11-09 09:50:07,342 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2021-11-09 09:50:07,351 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2021-11-09 09:50:07,358 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2021-11-09 09:50:07,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:50:07,429 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:50:07,537 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2021-11-09 09:50:07,565 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2021-11-09 09:50:07,576 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2021-11-09 09:50:07,580 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2021-11-09 09:50:07,605 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2021-11-09 09:50:07,610 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2021-11-09 09:50:07,621 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_2016c886-71f8-4466-9620-74973ed72089/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2021-11-09 09:50:07,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:50:07,682 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:50:07,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07 WrapperNode [2021-11-09 09:50:07,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:50:07,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:50:07,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:50:07,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:50:07,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:50:07,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:50:07,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:50:07,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:50:07,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:50:07,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:50:07,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:50:07,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:50:07,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (1/1) ... [2021-11-09 09:50:07,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:50:07,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:07,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:50:08,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:50:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:50:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:50:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:50:08,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:50:09,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:50:09,174 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 09:50:09,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:50:09 BoogieIcfgContainer [2021-11-09 09:50:09,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:50:09,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:50:09,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:50:09,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:50:09,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:50:06" (1/3) ... [2021-11-09 09:50:09,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f62f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:50:09, skipping insertion in model container [2021-11-09 09:50:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:07" (2/3) ... [2021-11-09 09:50:09,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f62f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:50:09, skipping insertion in model container [2021-11-09 09:50:09,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:50:09" (3/3) ... [2021-11-09 09:50:09,186 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-09 09:50:09,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:50:09,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-09 09:50:09,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:50:09,261 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 [2021-11-09 09:50:09,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-09 09:50:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 199 states have (on average 1.8241206030150754) internal successors, (363), 206 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 09:50:09,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:09,297 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] [2021-11-09 09:50:09,298 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)] === [2021-11-09 09:50:09,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1485336045, now seen corresponding path program 1 times [2021-11-09 09:50:09,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:09,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948212449] [2021-11-09 09:50:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:09,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:09,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:09,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948212449] [2021-11-09 09:50:09,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948212449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:09,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:09,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:50:09,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731743911] [2021-11-09 09:50:09,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:09,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:09,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:09,772 INFO L87 Difference]: Start difference. First operand has 207 states, 199 states have (on average 1.8241206030150754) internal successors, (363), 206 states have internal predecessors, (363), 0 states have call successors, (0), 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 9.4) 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) [2021-11-09 09:50:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:10,189 INFO L93 Difference]: Finished difference Result 339 states and 570 transitions. [2021-11-09 09:50:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:50:10,192 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 [2021-11-09 09:50:10,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:10,209 INFO L225 Difference]: With dead ends: 339 [2021-11-09 09:50:10,209 INFO L226 Difference]: Without dead ends: 184 [2021-11-09 09:50:10,214 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 [2021-11-09 09:50:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-09 09:50:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-09 09:50:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 1.271186440677966) internal successors, (225), 183 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) [2021-11-09 09:50:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 225 transitions. [2021-11-09 09:50:10,289 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 225 transitions. Word has length 47 [2021-11-09 09:50:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:10,290 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 225 transitions. [2021-11-09 09:50:10,291 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) [2021-11-09 09:50:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 225 transitions. [2021-11-09 09:50:10,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 09:50:10,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:10,294 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] [2021-11-09 09:50:10,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:50:10,299 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)] === [2021-11-09 09:50:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:10,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2047218142, now seen corresponding path program 1 times [2021-11-09 09:50:10,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:10,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714871018] [2021-11-09 09:50:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:10,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:10,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:10,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714871018] [2021-11-09 09:50:10,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714871018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:10,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:10,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:50:10,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765181601] [2021-11-09 09:50:10,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:10,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:10,529 INFO L87 Difference]: Start difference. First operand 184 states and 225 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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) [2021-11-09 09:50:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:10,703 INFO L93 Difference]: Finished difference Result 307 states and 386 transitions. [2021-11-09 09:50:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:50:10,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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 [2021-11-09 09:50:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:10,706 INFO L225 Difference]: With dead ends: 307 [2021-11-09 09:50:10,706 INFO L226 Difference]: Without dead ends: 165 [2021-11-09 09:50:10,708 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 [2021-11-09 09:50:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-09 09:50:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-09 09:50:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 158 states have (on average 1.2848101265822784) internal successors, (203), 164 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) [2021-11-09 09:50:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2021-11-09 09:50:10,727 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 48 [2021-11-09 09:50:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:10,728 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2021-11-09 09:50:10,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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) [2021-11-09 09:50:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2021-11-09 09:50:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:50:10,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:10,732 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] [2021-11-09 09:50:10,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:50:10,733 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)] === [2021-11-09 09:50:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1089931239, now seen corresponding path program 1 times [2021-11-09 09:50:10,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:10,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126908300] [2021-11-09 09:50:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:10,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:10,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:10,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126908300] [2021-11-09 09:50:10,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126908300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:10,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:10,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:50:10,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569960214] [2021-11-09 09:50:10,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:50:10,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:50:10,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:50:10,863 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 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) [2021-11-09 09:50:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:11,061 INFO L93 Difference]: Finished difference Result 367 states and 466 transitions. [2021-11-09 09:50:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:50:11,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 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 [2021-11-09 09:50:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:11,066 INFO L225 Difference]: With dead ends: 367 [2021-11-09 09:50:11,066 INFO L226 Difference]: Without dead ends: 236 [2021-11-09 09:50:11,071 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 [2021-11-09 09:50:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-09 09:50:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 218. [2021-11-09 09:50:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.3364928909952607) internal successors, (282), 217 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) [2021-11-09 09:50:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 282 transitions. [2021-11-09 09:50:11,121 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 282 transitions. Word has length 49 [2021-11-09 09:50:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:11,122 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 282 transitions. [2021-11-09 09:50:11,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 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) [2021-11-09 09:50:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 282 transitions. [2021-11-09 09:50:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:50:11,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:11,137 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] [2021-11-09 09:50:11,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:50:11,141 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)] === [2021-11-09 09:50:11,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1243075504, now seen corresponding path program 1 times [2021-11-09 09:50:11,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:11,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337053950] [2021-11-09 09:50:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:11,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:11,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:11,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337053950] [2021-11-09 09:50:11,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337053950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:11,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:11,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:50:11,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125129219] [2021-11-09 09:50:11,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:50:11,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:11,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:50:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:50:11,444 INFO L87 Difference]: Start difference. First operand 218 states and 282 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:12,283 INFO L93 Difference]: Finished difference Result 412 states and 553 transitions. [2021-11-09 09:50:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:50:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-09 09:50:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:12,289 INFO L225 Difference]: With dead ends: 412 [2021-11-09 09:50:12,291 INFO L226 Difference]: Without dead ends: 407 [2021-11-09 09:50:12,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:50:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-09 09:50:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 218. [2021-11-09 09:50:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.3317535545023698) internal successors, (281), 217 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) [2021-11-09 09:50:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 281 transitions. [2021-11-09 09:50:12,329 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 281 transitions. Word has length 50 [2021-11-09 09:50:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:12,330 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 281 transitions. [2021-11-09 09:50:12,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 281 transitions. [2021-11-09 09:50:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:50:12,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:12,334 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] [2021-11-09 09:50:12,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:50:12,334 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)] === [2021-11-09 09:50:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:12,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1139694690, now seen corresponding path program 1 times [2021-11-09 09:50:12,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:12,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872862277] [2021-11-09 09:50:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:12,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:12,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:12,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872862277] [2021-11-09 09:50:12,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872862277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:12,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:12,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:50:12,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409012775] [2021-11-09 09:50:12,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:50:12,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:50:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:50:12,567 INFO L87 Difference]: Start difference. First operand 218 states and 281 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:13,285 INFO L93 Difference]: Finished difference Result 629 states and 867 transitions. [2021-11-09 09:50:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:50:13,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-09 09:50:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:13,290 INFO L225 Difference]: With dead ends: 629 [2021-11-09 09:50:13,290 INFO L226 Difference]: Without dead ends: 529 [2021-11-09 09:50:13,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:50:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-09 09:50:13,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 218. [2021-11-09 09:50:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.3270142180094786) internal successors, (280), 217 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) [2021-11-09 09:50:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 280 transitions. [2021-11-09 09:50:13,325 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 280 transitions. Word has length 50 [2021-11-09 09:50:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:13,325 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 280 transitions. [2021-11-09 09:50:13,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:13,326 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 280 transitions. [2021-11-09 09:50:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:50:13,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:13,328 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] [2021-11-09 09:50:13,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:50:13,328 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)] === [2021-11-09 09:50:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:13,329 INFO L85 PathProgramCache]: Analyzing trace with hash 134088220, now seen corresponding path program 1 times [2021-11-09 09:50:13,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:13,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821422487] [2021-11-09 09:50:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:13,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:13,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:13,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821422487] [2021-11-09 09:50:13,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821422487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:13,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:13,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:50:13,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615862651] [2021-11-09 09:50:13,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:50:13,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:50:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:50:13,508 INFO L87 Difference]: Start difference. First operand 218 states and 280 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:13,863 INFO L93 Difference]: Finished difference Result 473 states and 623 transitions. [2021-11-09 09:50:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:50:13,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-09 09:50:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:13,867 INFO L225 Difference]: With dead ends: 473 [2021-11-09 09:50:13,868 INFO L226 Difference]: Without dead ends: 337 [2021-11-09 09:50:13,868 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 [2021-11-09 09:50:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-09 09:50:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 218. [2021-11-09 09:50:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 211 states have (on average 1.3222748815165877) internal successors, (279), 217 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 279 transitions. [2021-11-09 09:50:13,893 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 279 transitions. Word has length 50 [2021-11-09 09:50:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:13,894 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 279 transitions. [2021-11-09 09:50:13,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 279 transitions. [2021-11-09 09:50:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:50:13,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:13,896 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] [2021-11-09 09:50:13,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:50:13,896 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1263855603, now seen corresponding path program 1 times [2021-11-09 09:50:13,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:13,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223884492] [2021-11-09 09:50:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:13,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:14,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:14,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223884492] [2021-11-09 09:50:14,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223884492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:14,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:14,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:50:14,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036014252] [2021-11-09 09:50:14,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:50:14,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:50:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:50:14,664 INFO L87 Difference]: Start difference. First operand 218 states and 279 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2021-11-09 09:50:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:17,328 INFO L93 Difference]: Finished difference Result 618 states and 820 transitions. [2021-11-09 09:50:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:50:17,329 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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 [2021-11-09 09:50:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:17,333 INFO L225 Difference]: With dead ends: 618 [2021-11-09 09:50:17,333 INFO L226 Difference]: Without dead ends: 531 [2021-11-09 09:50:17,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2021-11-09 09:50:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-11-09 09:50:17,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 216. [2021-11-09 09:50:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3157894736842106) internal successors, (275), 215 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 275 transitions. [2021-11-09 09:50:17,368 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 275 transitions. Word has length 52 [2021-11-09 09:50:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:17,369 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 275 transitions. [2021-11-09 09:50:17,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2021-11-09 09:50:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 275 transitions. [2021-11-09 09:50:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:50:17,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:17,370 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] [2021-11-09 09:50:17,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:50:17,371 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1250594545, now seen corresponding path program 1 times [2021-11-09 09:50:17,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:17,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084771549] [2021-11-09 09:50:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:17,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:18,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:18,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084771549] [2021-11-09 09:50:18,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084771549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:18,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:18,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:50:18,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759352928] [2021-11-09 09:50:18,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:50:18,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:50:18,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:50:18,076 INFO L87 Difference]: Start difference. First operand 216 states and 275 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2021-11-09 09:50:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:20,148 INFO L93 Difference]: Finished difference Result 721 states and 984 transitions. [2021-11-09 09:50:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:50:20,151 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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 [2021-11-09 09:50:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:20,156 INFO L225 Difference]: With dead ends: 721 [2021-11-09 09:50:20,157 INFO L226 Difference]: Without dead ends: 715 [2021-11-09 09:50:20,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2021-11-09 09:50:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-09 09:50:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 216. [2021-11-09 09:50:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3110047846889952) internal successors, (274), 215 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 274 transitions. [2021-11-09 09:50:20,195 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 274 transitions. Word has length 52 [2021-11-09 09:50:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:20,195 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 274 transitions. [2021-11-09 09:50:20,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2021-11-09 09:50:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 274 transitions. [2021-11-09 09:50:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:50:20,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:20,197 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] [2021-11-09 09:50:20,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:50:20,198 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:20,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1783814727, now seen corresponding path program 1 times [2021-11-09 09:50:20,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:20,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104899424] [2021-11-09 09:50:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:20,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:21,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:21,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104899424] [2021-11-09 09:50:21,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104899424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:21,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:21,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-09 09:50:21,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947958083] [2021-11-09 09:50:21,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 09:50:21,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 09:50:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:50:21,073 INFO L87 Difference]: Start difference. First operand 216 states and 274 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) [2021-11-09 09:50:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:23,852 INFO L93 Difference]: Finished difference Result 814 states and 1123 transitions. [2021-11-09 09:50:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:50:23,853 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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 [2021-11-09 09:50:23,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:23,858 INFO L225 Difference]: With dead ends: 814 [2021-11-09 09:50:23,858 INFO L226 Difference]: Without dead ends: 720 [2021-11-09 09:50:23,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:50:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-11-09 09:50:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 205. [2021-11-09 09:50:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 199 states have (on average 1.3165829145728642) internal successors, (262), 204 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 262 transitions. [2021-11-09 09:50:23,899 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 262 transitions. Word has length 52 [2021-11-09 09:50:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:23,900 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 262 transitions. [2021-11-09 09:50:23,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 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) [2021-11-09 09:50:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 262 transitions. [2021-11-09 09:50:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:50:23,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:23,901 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] [2021-11-09 09:50:23,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:50:23,902 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:23,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1706910886, now seen corresponding path program 1 times [2021-11-09 09:50:23,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:23,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617037333] [2021-11-09 09:50:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:23,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:24,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:24,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617037333] [2021-11-09 09:50:24,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617037333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:24,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:24,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:50:24,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537326271] [2021-11-09 09:50:24,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:50:24,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:50:24,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:50:24,456 INFO L87 Difference]: Start difference. First operand 205 states and 262 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2021-11-09 09:50:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:26,043 INFO L93 Difference]: Finished difference Result 519 states and 678 transitions. [2021-11-09 09:50:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:50:26,043 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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 [2021-11-09 09:50:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:26,047 INFO L225 Difference]: With dead ends: 519 [2021-11-09 09:50:26,047 INFO L226 Difference]: Without dead ends: 515 [2021-11-09 09:50:26,048 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 [2021-11-09 09:50:26,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-11-09 09:50:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 215. [2021-11-09 09:50:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.325358851674641) internal successors, (277), 214 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 277 transitions. [2021-11-09 09:50:26,088 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 277 transitions. Word has length 52 [2021-11-09 09:50:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:26,089 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 277 transitions. [2021-11-09 09:50:26,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 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) [2021-11-09 09:50:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 277 transitions. [2021-11-09 09:50:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:50:26,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:26,091 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] [2021-11-09 09:50:26,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:50:26,091 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:26,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash -987220198, now seen corresponding path program 1 times [2021-11-09 09:50:26,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:26,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222363932] [2021-11-09 09:50:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:26,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:26,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:26,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222363932] [2021-11-09 09:50:26,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222363932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:26,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:26,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 09:50:26,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740918884] [2021-11-09 09:50:26,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:50:26,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:50:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:50:26,494 INFO L87 Difference]: Start difference. First operand 215 states and 277 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 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) [2021-11-09 09:50:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:27,659 INFO L93 Difference]: Finished difference Result 976 states and 1374 transitions. [2021-11-09 09:50:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:50:27,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 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 [2021-11-09 09:50:27,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:27,665 INFO L225 Difference]: With dead ends: 976 [2021-11-09 09:50:27,665 INFO L226 Difference]: Without dead ends: 956 [2021-11-09 09:50:27,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-09 09:50:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-11-09 09:50:27,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 189. [2021-11-09 09:50:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.318918918918919) internal successors, (244), 188 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) [2021-11-09 09:50:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2021-11-09 09:50:27,713 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 244 transitions. Word has length 53 [2021-11-09 09:50:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:27,714 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-11-09 09:50:27,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 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) [2021-11-09 09:50:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 244 transitions. [2021-11-09 09:50:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:50:27,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:27,715 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] [2021-11-09 09:50:27,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:50:27,716 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:27,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:27,717 INFO L85 PathProgramCache]: Analyzing trace with hash 190692674, now seen corresponding path program 1 times [2021-11-09 09:50:27,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:27,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276519893] [2021-11-09 09:50:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:27,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:27,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:27,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276519893] [2021-11-09 09:50:27,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276519893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:27,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:27,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:50:27,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886181943] [2021-11-09 09:50:27,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:50:27,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:50:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:50:27,897 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 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) [2021-11-09 09:50:29,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:29,157 INFO L93 Difference]: Finished difference Result 628 states and 856 transitions. [2021-11-09 09:50:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:50:29,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 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 [2021-11-09 09:50:29,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:29,162 INFO L225 Difference]: With dead ends: 628 [2021-11-09 09:50:29,162 INFO L226 Difference]: Without dead ends: 621 [2021-11-09 09:50:29,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:50:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-09 09:50:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 189. [2021-11-09 09:50:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.3135135135135134) internal successors, (243), 188 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 243 transitions. [2021-11-09 09:50:29,215 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 243 transitions. Word has length 53 [2021-11-09 09:50:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:29,215 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 243 transitions. [2021-11-09 09:50:29,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 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) [2021-11-09 09:50:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 243 transitions. [2021-11-09 09:50:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:50:29,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:29,217 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] [2021-11-09 09:50:29,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:50:29,217 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash -185701506, now seen corresponding path program 1 times [2021-11-09 09:50:29,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:29,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641039769] [2021-11-09 09:50:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:29,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:29,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:29,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641039769] [2021-11-09 09:50:29,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641039769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:29,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:29,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:50:29,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401347855] [2021-11-09 09:50:29,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:50:29,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:29,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:50:29,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:50:29,627 INFO L87 Difference]: Start difference. First operand 189 states and 243 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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) [2021-11-09 09:50:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:30,713 INFO L93 Difference]: Finished difference Result 496 states and 672 transitions. [2021-11-09 09:50:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:50:30,714 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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 [2021-11-09 09:50:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:30,716 INFO L225 Difference]: With dead ends: 496 [2021-11-09 09:50:30,716 INFO L226 Difference]: Without dead ends: 409 [2021-11-09 09:50:30,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:50:30,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-09 09:50:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 183. [2021-11-09 09:50:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.3055555555555556) internal successors, (235), 182 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 235 transitions. [2021-11-09 09:50:30,761 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 235 transitions. Word has length 53 [2021-11-09 09:50:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:30,761 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 235 transitions. [2021-11-09 09:50:30,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 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) [2021-11-09 09:50:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 235 transitions. [2021-11-09 09:50:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:50:30,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:30,763 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] [2021-11-09 09:50:30,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:50:30,763 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)] === [2021-11-09 09:50:30,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 339917441, now seen corresponding path program 1 times [2021-11-09 09:50:30,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:30,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725104585] [2021-11-09 09:50:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:30,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:30,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:30,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725104585] [2021-11-09 09:50:30,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725104585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:30,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:30,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:50:30,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990563822] [2021-11-09 09:50:30,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:50:30,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:50:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:50:30,904 INFO L87 Difference]: Start difference. First operand 183 states and 235 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 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) [2021-11-09 09:50:31,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:31,897 INFO L93 Difference]: Finished difference Result 729 states and 1012 transitions. [2021-11-09 09:50:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:50:31,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 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 [2021-11-09 09:50:31,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:31,902 INFO L225 Difference]: With dead ends: 729 [2021-11-09 09:50:31,902 INFO L226 Difference]: Without dead ends: 628 [2021-11-09 09:50:31,903 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 [2021-11-09 09:50:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-09 09:50:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 187. [2021-11-09 09:50:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 184 states have (on average 1.298913043478261) internal successors, (239), 186 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 239 transitions. [2021-11-09 09:50:31,970 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 239 transitions. Word has length 53 [2021-11-09 09:50:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:31,971 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 239 transitions. [2021-11-09 09:50:31,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 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) [2021-11-09 09:50:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 239 transitions. [2021-11-09 09:50:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:50:31,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:31,972 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] [2021-11-09 09:50:31,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:50:31,973 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)] === [2021-11-09 09:50:31,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1175492289, now seen corresponding path program 1 times [2021-11-09 09:50:31,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:31,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740756940] [2021-11-09 09:50:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:31,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:32,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:32,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740756940] [2021-11-09 09:50:32,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740756940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:32,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:32,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:50:32,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212223353] [2021-11-09 09:50:32,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:50:32,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:32,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:50:32,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:50:32,144 INFO L87 Difference]: Start difference. First operand 187 states and 239 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2021-11-09 09:50:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:32,689 INFO L93 Difference]: Finished difference Result 409 states and 551 transitions. [2021-11-09 09:50:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:32,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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 [2021-11-09 09:50:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:32,692 INFO L225 Difference]: With dead ends: 409 [2021-11-09 09:50:32,692 INFO L226 Difference]: Without dead ends: 308 [2021-11-09 09:50:32,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:50:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-09 09:50:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 183. [2021-11-09 09:50:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.3) internal successors, (234), 182 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2021-11-09 09:50:32,803 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 54 [2021-11-09 09:50:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:32,804 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2021-11-09 09:50:32,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2021-11-09 09:50:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2021-11-09 09:50:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:50:32,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:32,805 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] [2021-11-09 09:50:32,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:50:32,806 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash -746268687, now seen corresponding path program 1 times [2021-11-09 09:50:32,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:32,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619770157] [2021-11-09 09:50:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:32,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:32,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:32,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619770157] [2021-11-09 09:50:33,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619770157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:33,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:33,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:50:33,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135771359] [2021-11-09 09:50:33,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:50:33,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:50:33,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:50:33,006 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2021-11-09 09:50:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:33,535 INFO L93 Difference]: Finished difference Result 251 states and 320 transitions. [2021-11-09 09:50:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:50:33,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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 [2021-11-09 09:50:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:33,538 INFO L225 Difference]: With dead ends: 251 [2021-11-09 09:50:33,545 INFO L226 Difference]: Without dead ends: 244 [2021-11-09 09:50:33,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:50:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-09 09:50:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 179. [2021-11-09 09:50:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 176 states have (on average 1.3011363636363635) internal successors, (229), 178 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2021-11-09 09:50:33,601 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 54 [2021-11-09 09:50:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:33,601 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2021-11-09 09:50:33,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2021-11-09 09:50:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2021-11-09 09:50:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 09:50:33,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:33,604 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] [2021-11-09 09:50:33,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:50:33,604 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:33,605 INFO L85 PathProgramCache]: Analyzing trace with hash -11876974, now seen corresponding path program 1 times [2021-11-09 09:50:33,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:33,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754760385] [2021-11-09 09:50:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:33,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:34,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:34,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754760385] [2021-11-09 09:50:34,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754760385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:34,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:34,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:50:34,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478965083] [2021-11-09 09:50:34,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:50:34,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:50:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:50:34,125 INFO L87 Difference]: Start difference. First operand 179 states and 229 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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) [2021-11-09 09:50:35,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:35,419 INFO L93 Difference]: Finished difference Result 416 states and 547 transitions. [2021-11-09 09:50:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:50:35,420 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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 [2021-11-09 09:50:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:35,423 INFO L225 Difference]: With dead ends: 416 [2021-11-09 09:50:35,423 INFO L226 Difference]: Without dead ends: 408 [2021-11-09 09:50:35,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:50:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-09 09:50:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 184. [2021-11-09 09:50:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.292817679558011) internal successors, (234), 183 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 234 transitions. [2021-11-09 09:50:35,487 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 234 transitions. Word has length 55 [2021-11-09 09:50:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:35,488 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 234 transitions. [2021-11-09 09:50:35,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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) [2021-11-09 09:50:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 234 transitions. [2021-11-09 09:50:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 09:50:35,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:35,489 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] [2021-11-09 09:50:35,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:50:35,490 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)] === [2021-11-09 09:50:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash -824240014, now seen corresponding path program 1 times [2021-11-09 09:50:35,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:35,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34628820] [2021-11-09 09:50:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:35,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:36,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:36,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34628820] [2021-11-09 09:50:36,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34628820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:36,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:36,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:50:36,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111009616] [2021-11-09 09:50:36,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:50:36,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:36,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:50:36,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:50:36,039 INFO L87 Difference]: Start difference. First operand 184 states and 234 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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) [2021-11-09 09:50:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:38,108 INFO L93 Difference]: Finished difference Result 985 states and 1385 transitions. [2021-11-09 09:50:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:50:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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 [2021-11-09 09:50:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:38,114 INFO L225 Difference]: With dead ends: 985 [2021-11-09 09:50:38,115 INFO L226 Difference]: Without dead ends: 979 [2021-11-09 09:50:38,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:50:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-09 09:50:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 195. [2021-11-09 09:50:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.2916666666666667) internal successors, (248), 194 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 248 transitions. [2021-11-09 09:50:38,180 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 248 transitions. Word has length 55 [2021-11-09 09:50:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:38,181 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 248 transitions. [2021-11-09 09:50:38,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 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) [2021-11-09 09:50:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 248 transitions. [2021-11-09 09:50:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:50:38,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:38,182 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] [2021-11-09 09:50:38,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:50:38,182 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash -995695438, now seen corresponding path program 1 times [2021-11-09 09:50:38,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:38,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243626259] [2021-11-09 09:50:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:38,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:38,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:38,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243626259] [2021-11-09 09:50:38,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243626259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:38,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:38,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:50:38,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551627687] [2021-11-09 09:50:38,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:50:38,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:38,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:50:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:50:38,711 INFO L87 Difference]: Start difference. First operand 195 states and 248 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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) [2021-11-09 09:50:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:40,996 INFO L93 Difference]: Finished difference Result 915 states and 1290 transitions. [2021-11-09 09:50:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:50:40,997 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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 [2021-11-09 09:50:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:41,001 INFO L225 Difference]: With dead ends: 915 [2021-11-09 09:50:41,001 INFO L226 Difference]: Without dead ends: 909 [2021-11-09 09:50:41,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:50:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-11-09 09:50:41,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 184. [2021-11-09 09:50:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.287292817679558) internal successors, (233), 183 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2021-11-09 09:50:41,081 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 56 [2021-11-09 09:50:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:41,083 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2021-11-09 09:50:41,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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) [2021-11-09 09:50:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2021-11-09 09:50:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:50:41,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:41,084 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] [2021-11-09 09:50:41,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:50:41,085 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:41,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:41,085 INFO L85 PathProgramCache]: Analyzing trace with hash 623432965, now seen corresponding path program 1 times [2021-11-09 09:50:41,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:41,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832694409] [2021-11-09 09:50:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:41,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:41,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:41,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832694409] [2021-11-09 09:50:41,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832694409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:41,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:41,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:50:41,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953232936] [2021-11-09 09:50:41,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:50:41,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:50:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:50:41,366 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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) [2021-11-09 09:50:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:41,902 INFO L93 Difference]: Finished difference Result 499 states and 676 transitions. [2021-11-09 09:50:41,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:50:41,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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 [2021-11-09 09:50:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:41,905 INFO L225 Difference]: With dead ends: 499 [2021-11-09 09:50:41,905 INFO L226 Difference]: Without dead ends: 476 [2021-11-09 09:50:41,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:50:41,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-09 09:50:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 161. [2021-11-09 09:50:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.3081761006289307) internal successors, (208), 160 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2021-11-09 09:50:41,958 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 56 [2021-11-09 09:50:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:41,958 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2021-11-09 09:50:41,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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) [2021-11-09 09:50:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2021-11-09 09:50:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:50:41,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:41,960 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] [2021-11-09 09:50:41,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 09:50:41,960 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:50:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1326812170, now seen corresponding path program 1 times [2021-11-09 09:50:41,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:41,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798543890] [2021-11-09 09:50:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:41,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:42,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:42,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798543890] [2021-11-09 09:50:42,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798543890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:42,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:42,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:50:42,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774101665] [2021-11-09 09:50:42,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:50:42,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:50:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:50:42,262 INFO L87 Difference]: Start difference. First operand 161 states and 208 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2021-11-09 09:50:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:43,006 INFO L93 Difference]: Finished difference Result 344 states and 472 transitions. [2021-11-09 09:50:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:50:43,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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 [2021-11-09 09:50:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:43,008 INFO L225 Difference]: With dead ends: 344 [2021-11-09 09:50:43,008 INFO L226 Difference]: Without dead ends: 338 [2021-11-09 09:50:43,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:50:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-09 09:50:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 155. [2021-11-09 09:50:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.3116883116883118) internal successors, (202), 154 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 202 transitions. [2021-11-09 09:50:43,072 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 202 transitions. Word has length 56 [2021-11-09 09:50:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:43,072 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 202 transitions. [2021-11-09 09:50:43,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2021-11-09 09:50:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 202 transitions. [2021-11-09 09:50:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 09:50:43,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:43,074 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] [2021-11-09 09:50:43,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 09:50:43,074 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)] === [2021-11-09 09:50:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2042294308, now seen corresponding path program 1 times [2021-11-09 09:50:43,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:43,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915884785] [2021-11-09 09:50:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:43,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:43,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:43,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915884785] [2021-11-09 09:50:43,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915884785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:43,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:43,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:50:43,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913331880] [2021-11-09 09:50:43,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:43,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:43,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:43,135 INFO L87 Difference]: Start difference. First operand 155 states and 202 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:43,424 INFO L93 Difference]: Finished difference Result 653 states and 946 transitions. [2021-11-09 09:50:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:50:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-09 09:50:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:43,427 INFO L225 Difference]: With dead ends: 653 [2021-11-09 09:50:43,427 INFO L226 Difference]: Without dead ends: 570 [2021-11-09 09:50:43,428 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 [2021-11-09 09:50:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-09 09:50:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 236. [2021-11-09 09:50:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3659574468085107) internal successors, (321), 235 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 321 transitions. [2021-11-09 09:50:43,535 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 321 transitions. Word has length 73 [2021-11-09 09:50:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:43,536 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 321 transitions. [2021-11-09 09:50:43,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 321 transitions. [2021-11-09 09:50:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:50:43,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:43,537 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] [2021-11-09 09:50:43,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 09:50:43,538 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)] === [2021-11-09 09:50:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash -786943772, now seen corresponding path program 1 times [2021-11-09 09:50:43,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:43,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534873906] [2021-11-09 09:50:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:43,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:43,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:43,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534873906] [2021-11-09 09:50:43,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534873906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:43,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:43,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:50:43,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427193543] [2021-11-09 09:50:43,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:43,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:43,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:43,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:43,595 INFO L87 Difference]: Start difference. First operand 236 states and 321 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-09 09:50:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:44,006 INFO L93 Difference]: Finished difference Result 730 states and 1043 transitions. [2021-11-09 09:50:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:50:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2021-11-09 09:50:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:44,010 INFO L225 Difference]: With dead ends: 730 [2021-11-09 09:50:44,010 INFO L226 Difference]: Without dead ends: 566 [2021-11-09 09:50:44,010 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 [2021-11-09 09:50:44,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-09 09:50:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 288. [2021-11-09 09:50:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.3693379790940767) internal successors, (393), 287 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 393 transitions. [2021-11-09 09:50:44,136 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 393 transitions. Word has length 75 [2021-11-09 09:50:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:44,137 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 393 transitions. [2021-11-09 09:50:44,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-09 09:50:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 393 transitions. [2021-11-09 09:50:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:50:44,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:44,138 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] [2021-11-09 09:50:44,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 09:50:44,138 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)] === [2021-11-09 09:50:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:44,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1322322984, now seen corresponding path program 1 times [2021-11-09 09:50:44,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:44,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980352016] [2021-11-09 09:50:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:44,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:44,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:44,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980352016] [2021-11-09 09:50:44,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980352016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:44,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:44,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:50:44,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785896879] [2021-11-09 09:50:44,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:44,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:44,205 INFO L87 Difference]: Start difference. First operand 288 states and 393 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-09 09:50:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:44,668 INFO L93 Difference]: Finished difference Result 1024 states and 1437 transitions. [2021-11-09 09:50:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:50:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2021-11-09 09:50:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:44,673 INFO L225 Difference]: With dead ends: 1024 [2021-11-09 09:50:44,673 INFO L226 Difference]: Without dead ends: 808 [2021-11-09 09:50:44,674 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 [2021-11-09 09:50:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-11-09 09:50:44,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 522. [2021-11-09 09:50:44,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 1.4030710172744723) internal successors, (731), 521 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 731 transitions. [2021-11-09 09:50:44,878 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 731 transitions. Word has length 75 [2021-11-09 09:50:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:44,879 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 731 transitions. [2021-11-09 09:50:44,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-09 09:50:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 731 transitions. [2021-11-09 09:50:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:50:44,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:44,880 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] [2021-11-09 09:50:44,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 09:50:44,881 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)] === [2021-11-09 09:50:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1446907099, now seen corresponding path program 1 times [2021-11-09 09:50:44,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:44,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643676307] [2021-11-09 09:50:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:44,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:44,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:44,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643676307] [2021-11-09 09:50:44,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643676307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:44,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:44,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:44,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444766909] [2021-11-09 09:50:44,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:44,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:44,943 INFO L87 Difference]: Start difference. First operand 522 states and 731 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) [2021-11-09 09:50:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:45,240 INFO L93 Difference]: Finished difference Result 974 states and 1385 transitions. [2021-11-09 09:50:45,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:45,241 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 [2021-11-09 09:50:45,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:45,244 INFO L225 Difference]: With dead ends: 974 [2021-11-09 09:50:45,244 INFO L226 Difference]: Without dead ends: 524 [2021-11-09 09:50:45,245 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 [2021-11-09 09:50:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-09 09:50:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2021-11-09 09:50:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 1.3877159309021114) internal successors, (723), 521 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 723 transitions. [2021-11-09 09:50:45,527 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 723 transitions. Word has length 75 [2021-11-09 09:50:45,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:45,527 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 723 transitions. [2021-11-09 09:50:45,527 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) [2021-11-09 09:50:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 723 transitions. [2021-11-09 09:50:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:50:45,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:45,529 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] [2021-11-09 09:50:45,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 09:50:45,530 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)] === [2021-11-09 09:50:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2078767204, now seen corresponding path program 1 times [2021-11-09 09:50:45,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:45,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652501762] [2021-11-09 09:50:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:45,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:45,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:45,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652501762] [2021-11-09 09:50:45,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652501762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:45,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:45,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:45,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757948777] [2021-11-09 09:50:45,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:45,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:45,576 INFO L87 Difference]: Start difference. First operand 522 states and 723 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) [2021-11-09 09:50:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:46,114 INFO L93 Difference]: Finished difference Result 1342 states and 1885 transitions. [2021-11-09 09:50:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:46,115 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 [2021-11-09 09:50:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:46,120 INFO L225 Difference]: With dead ends: 1342 [2021-11-09 09:50:46,120 INFO L226 Difference]: Without dead ends: 892 [2021-11-09 09:50:46,121 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 [2021-11-09 09:50:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-09 09:50:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2021-11-09 09:50:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.357705286839145) internal successors, (1207), 889 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1207 transitions. [2021-11-09 09:50:46,510 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1207 transitions. Word has length 75 [2021-11-09 09:50:46,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:46,511 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1207 transitions. [2021-11-09 09:50:46,511 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) [2021-11-09 09:50:46,511 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1207 transitions. [2021-11-09 09:50:46,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:50:46,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:46,513 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] [2021-11-09 09:50:46,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 09:50:46,513 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)] === [2021-11-09 09:50:46,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:46,514 INFO L85 PathProgramCache]: Analyzing trace with hash 95104542, now seen corresponding path program 1 times [2021-11-09 09:50:46,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:46,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900592260] [2021-11-09 09:50:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:46,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:46,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:46,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900592260] [2021-11-09 09:50:46,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900592260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:46,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:46,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:50:46,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847765335] [2021-11-09 09:50:46,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:46,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:46,566 INFO L87 Difference]: Start difference. First operand 890 states and 1207 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-09 09:50:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:47,697 INFO L93 Difference]: Finished difference Result 3226 states and 4415 transitions. [2021-11-09 09:50:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:50:47,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2021-11-09 09:50:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:47,708 INFO L225 Difference]: With dead ends: 3226 [2021-11-09 09:50:47,708 INFO L226 Difference]: Without dead ends: 2408 [2021-11-09 09:50:47,709 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 [2021-11-09 09:50:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2021-11-09 09:50:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 1530. [2021-11-09 09:50:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 1.3518639633747547) internal successors, (2067), 1529 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2067 transitions. [2021-11-09 09:50:48,307 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2067 transitions. Word has length 75 [2021-11-09 09:50:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:48,307 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 2067 transitions. [2021-11-09 09:50:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-11-09 09:50:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2067 transitions. [2021-11-09 09:50:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 09:50:48,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:48,309 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] [2021-11-09 09:50:48,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 09:50:48,310 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)] === [2021-11-09 09:50:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1963614716, now seen corresponding path program 1 times [2021-11-09 09:50:48,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:48,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561118774] [2021-11-09 09:50:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:48,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:48,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:48,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561118774] [2021-11-09 09:50:48,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561118774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:48,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:48,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:48,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431656406] [2021-11-09 09:50:48,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:48,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:48,352 INFO L87 Difference]: Start difference. First operand 1530 states and 2067 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) [2021-11-09 09:50:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:49,178 INFO L93 Difference]: Finished difference Result 2926 states and 3961 transitions. [2021-11-09 09:50:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:49,179 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 [2021-11-09 09:50:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:49,185 INFO L225 Difference]: With dead ends: 2926 [2021-11-09 09:50:49,186 INFO L226 Difference]: Without dead ends: 1468 [2021-11-09 09:50:49,188 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 [2021-11-09 09:50:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-11-09 09:50:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1302. [2021-11-09 09:50:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 1.3335895465026903) internal successors, (1735), 1301 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1735 transitions. [2021-11-09 09:50:49,788 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1735 transitions. Word has length 76 [2021-11-09 09:50:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:49,789 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 1735 transitions. [2021-11-09 09:50:49,789 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) [2021-11-09 09:50:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1735 transitions. [2021-11-09 09:50:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:50:49,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:49,791 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] [2021-11-09 09:50:49,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 09:50:49,792 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)] === [2021-11-09 09:50:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash -628172474, now seen corresponding path program 1 times [2021-11-09 09:50:49,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:49,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410227188] [2021-11-09 09:50:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:49,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:49,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:49,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410227188] [2021-11-09 09:50:49,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410227188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:49,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:49,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:49,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753538012] [2021-11-09 09:50:49,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:49,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:49,840 INFO L87 Difference]: Start difference. First operand 1302 states and 1735 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-11-09 09:50:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:50,365 INFO L93 Difference]: Finished difference Result 2442 states and 3253 transitions. [2021-11-09 09:50:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2021-11-09 09:50:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:50,371 INFO L225 Difference]: With dead ends: 2442 [2021-11-09 09:50:50,371 INFO L226 Difference]: Without dead ends: 1212 [2021-11-09 09:50:50,373 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 [2021-11-09 09:50:50,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-09 09:50:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1170. [2021-11-09 09:50:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.313088109495295) internal successors, (1535), 1169 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1535 transitions. [2021-11-09 09:50:50,853 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1535 transitions. Word has length 77 [2021-11-09 09:50:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:50,853 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 1535 transitions. [2021-11-09 09:50:50,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-11-09 09:50:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1535 transitions. [2021-11-09 09:50:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 09:50:50,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:50,854 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] [2021-11-09 09:50:50,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 09:50:50,854 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)] === [2021-11-09 09:50:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1629320958, now seen corresponding path program 1 times [2021-11-09 09:50:50,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:50,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589498606] [2021-11-09 09:50:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:50,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:50,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:50,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589498606] [2021-11-09 09:50:50,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589498606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:50,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:50,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:50:50,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097450241] [2021-11-09 09:50:50,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:50,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:50,895 INFO L87 Difference]: Start difference. First operand 1170 states and 1535 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2021-11-09 09:50:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:51,585 INFO L93 Difference]: Finished difference Result 2279 states and 3003 transitions. [2021-11-09 09:50:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:50:51,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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 [2021-11-09 09:50:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:51,592 INFO L225 Difference]: With dead ends: 2279 [2021-11-09 09:50:51,592 INFO L226 Difference]: Without dead ends: 1181 [2021-11-09 09:50:51,594 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 [2021-11-09 09:50:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-11-09 09:50:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1157. [2021-11-09 09:50:52,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.314878892733564) internal successors, (1520), 1156 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1520 transitions. [2021-11-09 09:50:52,201 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1520 transitions. Word has length 78 [2021-11-09 09:50:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:52,201 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1520 transitions. [2021-11-09 09:50:52,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2021-11-09 09:50:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1520 transitions. [2021-11-09 09:50:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 09:50:52,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:52,202 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] [2021-11-09 09:50:52,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 09:50:52,202 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)] === [2021-11-09 09:50:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash -763788569, now seen corresponding path program 1 times [2021-11-09 09:50:52,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:52,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156416146] [2021-11-09 09:50:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:52,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:52,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:52,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156416146] [2021-11-09 09:50:52,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156416146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:52,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:52,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:52,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104404492] [2021-11-09 09:50:52,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:52,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:52,251 INFO L87 Difference]: Start difference. First operand 1157 states and 1520 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) [2021-11-09 09:50:52,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:52,986 INFO L93 Difference]: Finished difference Result 2837 states and 3702 transitions. [2021-11-09 09:50:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:52,986 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 [2021-11-09 09:50:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:52,992 INFO L225 Difference]: With dead ends: 2837 [2021-11-09 09:50:52,993 INFO L226 Difference]: Without dead ends: 1739 [2021-11-09 09:50:52,995 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 [2021-11-09 09:50:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2021-11-09 09:50:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1605. [2021-11-09 09:50:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.2905236907730673) internal successors, (2070), 1604 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2070 transitions. [2021-11-09 09:50:53,699 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2070 transitions. Word has length 78 [2021-11-09 09:50:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:53,699 INFO L470 AbstractCegarLoop]: Abstraction has 1605 states and 2070 transitions. [2021-11-09 09:50:53,700 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) [2021-11-09 09:50:53,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2070 transitions. [2021-11-09 09:50:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:50:53,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:53,700 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, 1] [2021-11-09 09:50:53,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 09:50:53,701 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)] === [2021-11-09 09:50:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1461539563, now seen corresponding path program 1 times [2021-11-09 09:50:53,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:53,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032983556] [2021-11-09 09:50:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:53,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:53,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:53,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032983556] [2021-11-09 09:50:53,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032983556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:53,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:53,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:50:53,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054448773] [2021-11-09 09:50:53,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:50:53,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:50:53,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:50:53,772 INFO L87 Difference]: Start difference. First operand 1605 states and 2070 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:55,067 INFO L93 Difference]: Finished difference Result 2516 states and 3243 transitions. [2021-11-09 09:50:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:50:55,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-09 09:50:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:55,078 INFO L225 Difference]: With dead ends: 2516 [2021-11-09 09:50:55,078 INFO L226 Difference]: Without dead ends: 2514 [2021-11-09 09:50:55,079 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 [2021-11-09 09:50:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-11-09 09:50:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1653. [2021-11-09 09:50:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 1.2723970944309928) internal successors, (2102), 1652 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2102 transitions. [2021-11-09 09:50:55,846 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2102 transitions. Word has length 79 [2021-11-09 09:50:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:55,847 INFO L470 AbstractCegarLoop]: Abstraction has 1653 states and 2102 transitions. [2021-11-09 09:50:55,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2102 transitions. [2021-11-09 09:50:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:50:55,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:55,848 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, 1] [2021-11-09 09:50:55,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 09:50:55,848 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)] === [2021-11-09 09:50:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash 965347417, now seen corresponding path program 1 times [2021-11-09 09:50:55,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:55,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837605937] [2021-11-09 09:50:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:55,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:55,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:55,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837605937] [2021-11-09 09:50:55,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837605937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:55,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:55,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:55,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658039463] [2021-11-09 09:50:55,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:55,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:55,893 INFO L87 Difference]: Start difference. First operand 1653 states and 2102 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:56,829 INFO L93 Difference]: Finished difference Result 3533 states and 4507 transitions. [2021-11-09 09:50:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:56,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-09 09:50:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:56,840 INFO L225 Difference]: With dead ends: 3533 [2021-11-09 09:50:56,840 INFO L226 Difference]: Without dead ends: 1939 [2021-11-09 09:50:56,843 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 [2021-11-09 09:50:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2021-11-09 09:50:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1937. [2021-11-09 09:50:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 1.2577479338842976) internal successors, (2435), 1936 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2435 transitions. [2021-11-09 09:50:57,914 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2435 transitions. Word has length 79 [2021-11-09 09:50:57,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:57,915 INFO L470 AbstractCegarLoop]: Abstraction has 1937 states and 2435 transitions. [2021-11-09 09:50:57,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2435 transitions. [2021-11-09 09:50:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:50:57,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:57,917 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] [2021-11-09 09:50:57,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 09:50:57,918 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)] === [2021-11-09 09:50:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1093196834, now seen corresponding path program 1 times [2021-11-09 09:50:57,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:57,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586401994] [2021-11-09 09:50:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:57,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:50:58,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:58,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586401994] [2021-11-09 09:50:58,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586401994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:58,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:58,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:50:58,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95373701] [2021-11-09 09:50:58,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:50:58,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:50:58,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:50:58,051 INFO L87 Difference]: Start difference. First operand 1937 states and 2435 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:01,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:01,007 INFO L93 Difference]: Finished difference Result 8069 states and 10138 transitions. [2021-11-09 09:51:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:51:01,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 [2021-11-09 09:51:01,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:01,027 INFO L225 Difference]: With dead ends: 8069 [2021-11-09 09:51:01,028 INFO L226 Difference]: Without dead ends: 6191 [2021-11-09 09:51:01,031 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 [2021-11-09 09:51:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2021-11-09 09:51:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 3529. [2021-11-09 09:51:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3528 states have (on average 1.251984126984127) internal successors, (4417), 3528 states have internal predecessors, (4417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4417 transitions. [2021-11-09 09:51:02,854 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4417 transitions. Word has length 100 [2021-11-09 09:51:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:02,854 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4417 transitions. [2021-11-09 09:51:02,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4417 transitions. [2021-11-09 09:51:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:51:02,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:02,856 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] [2021-11-09 09:51:02,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 09:51:02,857 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)] === [2021-11-09 09:51:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash 557817622, now seen corresponding path program 1 times [2021-11-09 09:51:02,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:02,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942907198] [2021-11-09 09:51:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:02,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 09:51:02,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:02,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942907198] [2021-11-09 09:51:02,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942907198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:02,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:02,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:51:02,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659690039] [2021-11-09 09:51:02,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:51:02,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:51:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:51:02,928 INFO L87 Difference]: Start difference. First operand 3529 states and 4417 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:06,291 INFO L93 Difference]: Finished difference Result 9661 states and 12120 transitions. [2021-11-09 09:51:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:51:06,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2021-11-09 09:51:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:06,308 INFO L225 Difference]: With dead ends: 9661 [2021-11-09 09:51:06,308 INFO L226 Difference]: Without dead ends: 7783 [2021-11-09 09:51:06,310 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 [2021-11-09 09:51:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-11-09 09:51:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5901. [2021-11-09 09:51:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 5900 states have (on average 1.2457627118644068) internal successors, (7350), 5900 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 7350 transitions. [2021-11-09 09:51:08,952 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 7350 transitions. Word has length 100 [2021-11-09 09:51:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:08,953 INFO L470 AbstractCegarLoop]: Abstraction has 5901 states and 7350 transitions. [2021-11-09 09:51:08,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 7350 transitions. [2021-11-09 09:51:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:51:08,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:08,955 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] [2021-11-09 09:51:08,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 09:51:08,955 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)] === [2021-11-09 09:51:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:08,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1975245148, now seen corresponding path program 1 times [2021-11-09 09:51:08,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:08,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871768327] [2021-11-09 09:51:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:08,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 09:51:09,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:09,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871768327] [2021-11-09 09:51:09,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871768327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:09,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:09,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:51:09,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036873669] [2021-11-09 09:51:09,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:51:09,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:09,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:51:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:51:09,020 INFO L87 Difference]: Start difference. First operand 5901 states and 7350 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) [2021-11-09 09:51:13,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:13,060 INFO L93 Difference]: Finished difference Result 11253 states and 14102 transitions. [2021-11-09 09:51:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:51:13,061 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 100 [2021-11-09 09:51:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:13,083 INFO L225 Difference]: With dead ends: 11253 [2021-11-09 09:51:13,084 INFO L226 Difference]: Without dead ends: 9375 [2021-11-09 09:51:13,088 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 [2021-11-09 09:51:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9375 states. [2021-11-09 09:51:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9375 to 7493. [2021-11-09 09:51:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7493 states, 7492 states have (on average 1.2455953016550987) internal successors, (9332), 7492 states have internal predecessors, (9332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7493 states to 7493 states and 9332 transitions. [2021-11-09 09:51:16,358 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 9332 transitions. Word has length 100 [2021-11-09 09:51:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:16,359 INFO L470 AbstractCegarLoop]: Abstraction has 7493 states and 9332 transitions. [2021-11-09 09:51:16,359 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) [2021-11-09 09:51:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 9332 transitions. [2021-11-09 09:51:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-09 09:51:16,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:16,361 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:16,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 09:51:16,362 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:51:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1381911094, now seen corresponding path program 1 times [2021-11-09 09:51:16,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:16,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927765521] [2021-11-09 09:51:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:16,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:16,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:16,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927765521] [2021-11-09 09:51:16,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927765521] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:16,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118503626] [2021-11-09 09:51:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:16,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:16,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:16,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:16,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:51:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:16,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:51:16,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:18,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118503626] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:18,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:51:18,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-09 09:51:18,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270157741] [2021-11-09 09:51:18,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 09:51:18,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:18,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 09:51:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:51:18,067 INFO L87 Difference]: Start difference. First operand 7493 states and 9332 transitions. Second operand has 20 states, 20 states have (on average 9.4) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:18,161 INFO L93 Difference]: Finished difference Result 83958 states and 102297 transitions. [2021-11-09 09:52:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2021-11-09 09:52:18,171 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.4) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 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 101 [2021-11-09 09:52:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:18,393 INFO L225 Difference]: With dead ends: 83958 [2021-11-09 09:52:18,394 INFO L226 Difference]: Without dead ends: 76524 [2021-11-09 09:52:18,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16704 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=5917, Invalid=35089, Unknown=0, NotChecked=0, Total=41006 [2021-11-09 09:52:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76524 states. [2021-11-09 09:52:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76524 to 29959. [2021-11-09 09:52:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29959 states, 29958 states have (on average 1.236698043928166) internal successors, (37049), 29958 states have internal predecessors, (37049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:37,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29959 states to 29959 states and 37049 transitions. [2021-11-09 09:52:37,676 INFO L78 Accepts]: Start accepts. Automaton has 29959 states and 37049 transitions. Word has length 101 [2021-11-09 09:52:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:37,677 INFO L470 AbstractCegarLoop]: Abstraction has 29959 states and 37049 transitions. [2021-11-09 09:52:37,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.4) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 29959 states and 37049 transitions. [2021-11-09 09:52:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 09:52:37,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:37,682 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:37,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:37,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:37,911 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:52:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1412305418, now seen corresponding path program 1 times [2021-11-09 09:52:37,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:37,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254298784] [2021-11-09 09:52:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:37,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:38,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:38,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254298784] [2021-11-09 09:52:38,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254298784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:38,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111018705] [2021-11-09 09:52:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:38,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:38,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:38,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:38,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:52:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:38,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:52:38,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:39,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111018705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:39,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:52:39,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-11-09 09:52:39,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934945095] [2021-11-09 09:52:39,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 09:52:39,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 09:52:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:52:39,929 INFO L87 Difference]: Start difference. First operand 29959 states and 37049 transitions. Second operand has 20 states, 20 states have (on average 9.5) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:25,824 INFO L93 Difference]: Finished difference Result 81160 states and 99479 transitions. [2021-11-09 09:53:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-09 09:53:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.5) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 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 [2021-11-09 09:53:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:25,973 INFO L225 Difference]: With dead ends: 81160 [2021-11-09 09:53:25,974 INFO L226 Difference]: Without dead ends: 73726 [2021-11-09 09:53:26,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-11-09 09:53:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73726 states. [2021-11-09 09:53:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73726 to 29952. [2021-11-09 09:53:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29952 states, 29951 states have (on average 1.2367533638275852) internal successors, (37042), 29951 states have internal predecessors, (37042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29952 states to 29952 states and 37042 transitions. [2021-11-09 09:53:44,513 INFO L78 Accepts]: Start accepts. Automaton has 29952 states and 37042 transitions. Word has length 102 [2021-11-09 09:53:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:44,514 INFO L470 AbstractCegarLoop]: Abstraction has 29952 states and 37042 transitions. [2021-11-09 09:53:44,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.5) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 29952 states and 37042 transitions. [2021-11-09 09:53:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 09:53:44,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:44,519 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] [2021-11-09 09:53:44,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:44,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-09 09:53:44,729 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:53:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:44,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1454501220, now seen corresponding path program 1 times [2021-11-09 09:53:44,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:44,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916454129] [2021-11-09 09:53:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:44,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:53:45,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:45,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916454129] [2021-11-09 09:53:45,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916454129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:53:45,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581595201] [2021-11-09 09:53:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:45,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:53:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:53:45,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:53:45,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:53:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:45,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:53:45,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:53:46,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581595201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:53:46,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:53:46,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 24 [2021-11-09 09:53:46,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214115899] [2021-11-09 09:53:46,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:53:46,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:46,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:53:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:53:46,961 INFO L87 Difference]: Start difference. First operand 29952 states and 37042 transitions. Second operand has 24 states, 24 states have (on average 8.208333333333334) internal successors, (197), 24 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:55:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:55:31,291 INFO L93 Difference]: Finished difference Result 147941 states and 179634 transitions. [2021-11-09 09:55:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2021-11-09 09:55:31,292 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.208333333333334) internal successors, (197), 24 states have internal predecessors, (197), 0 states have call successors, (0), 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 [2021-11-09 09:55:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:55:31,725 INFO L225 Difference]: With dead ends: 147941 [2021-11-09 09:55:31,726 INFO L226 Difference]: Without dead ends: 118067 [2021-11-09 09:55:31,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31709 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=7089, Invalid=68261, Unknown=0, NotChecked=0, Total=75350 [2021-11-09 09:55:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118067 states. [2021-11-09 09:55:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118067 to 38479. [2021-11-09 09:55:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38479 states, 38478 states have (on average 1.224725817350174) internal successors, (47125), 38478 states have internal predecessors, (47125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:55:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38479 states to 38479 states and 47125 transitions. [2021-11-09 09:55:58,816 INFO L78 Accepts]: Start accepts. Automaton has 38479 states and 47125 transitions. Word has length 102 [2021-11-09 09:55:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:55:58,816 INFO L470 AbstractCegarLoop]: Abstraction has 38479 states and 47125 transitions. [2021-11-09 09:55:58,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.208333333333334) internal successors, (197), 24 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:55:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 38479 states and 47125 transitions. [2021-11-09 09:55:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:55:58,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:55:58,823 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, 1] [2021-11-09 09:55:58,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-09 09:55:59,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-09 09:55:59,039 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:55:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:55:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash -733135268, now seen corresponding path program 1 times [2021-11-09 09:55:59,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:55:59,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782319937] [2021-11-09 09:55:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:55:59,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:55:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:55:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:55:59,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:55:59,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782319937] [2021-11-09 09:55:59,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782319937] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:55:59,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352844722] [2021-11-09 09:55:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:55:59,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:55:59,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:55:59,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:55:59,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2016c886-71f8-4466-9620-74973ed72089/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:55:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:55:59,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:55:59,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:56:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:56:01,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352844722] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:56:01,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:56:01,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2021-11-09 09:56:01,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017769112] [2021-11-09 09:56:01,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:56:01,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:56:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:56:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:56:01,666 INFO L87 Difference]: Start difference. First operand 38479 states and 47125 transitions. Second operand has 24 states, 24 states have (on average 8.291666666666666) internal successors, (199), 24 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)