./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/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 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:34:42,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:34:42,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:34:42,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:34:42,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:34:42,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:34:42,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:34:42,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:34:42,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:34:42,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:34:42,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:34:42,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:34:42,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:34:42,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:34:42,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:34:42,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:34:42,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:34:42,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:34:42,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:34:42,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:34:42,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:34:42,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:34:42,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:34:42,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:34:42,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:34:42,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:34:42,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:34:42,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:34:42,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:34:42,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:34:42,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:34:42,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:34:42,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:34:42,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:34:42,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:34:42,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:34:42,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:34:42,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:34:42,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:34:42,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:34:42,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:34:42,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:34:42,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:34:42,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:34:42,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:34:42,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:34:42,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:34:42,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:34:42,865 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:34:42,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:34:42,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:34:42,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:34:42,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:34:42,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:34:42,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:34:42,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:34:42,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:34:42,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:34:42,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:34:42,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:34:42,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:34:42,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:34:42,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:34:42,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:34:42,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:42,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:34:42,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:34:42,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:34:42,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:34:42,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:34:42,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:34:42,875 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:34:42,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:34:42,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:34:42,884 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 [2021-11-09 09:34:43,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:34:43,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:34:43,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:34:43,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:34:43,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:34:43,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-09 09:34:43,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/data/632056ddb/205b1a4cbb984d8294e4740be5d9c3c0/FLAGd692351b4 [2021-11-09 09:34:43,873 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:34:43,874 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-09 09:34:43,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/data/632056ddb/205b1a4cbb984d8294e4740be5d9c3c0/FLAGd692351b4 [2021-11-09 09:34:44,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/data/632056ddb/205b1a4cbb984d8294e4740be5d9c3c0 [2021-11-09 09:34:44,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:34:44,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:34:44,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:44,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:34:44,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:34:44,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:44" (1/1) ... [2021-11-09 09:34:44,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de2af5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:44, skipping insertion in model container [2021-11-09 09:34:44,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:44" (1/1) ... [2021-11-09 09:34:44,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:34:44,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:34:44,418 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2021-11-09 09:34:44,468 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2021-11-09 09:34:44,491 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2021-11-09 09:34:44,504 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2021-11-09 09:34:44,515 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2021-11-09 09:34:44,520 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2021-11-09 09:34:44,529 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2021-11-09 09:34:44,557 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2021-11-09 09:34:44,563 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2021-11-09 09:34:44,569 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2021-11-09 09:34:44,598 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2021-11-09 09:34:44,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:44,730 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:34:44,816 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2021-11-09 09:34:44,858 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2021-11-09 09:34:44,878 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2021-11-09 09:34:44,900 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2021-11-09 09:34:44,927 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2021-11-09 09:34:44,947 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2021-11-09 09:34:44,957 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2021-11-09 09:34:44,985 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2021-11-09 09:34:44,995 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2021-11-09 09:34:45,006 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2021-11-09 09:34:45,033 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_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2021-11-09 09:34:45,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:45,169 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:34:45,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45 WrapperNode [2021-11-09 09:34:45,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:45,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:45,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:34:45,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:34:45,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:45,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:34:45,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:34:45,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:34:45,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:34:45,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:34:45,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:34:45,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:34:45,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (1/1) ... [2021-11-09 09:34:45,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:45,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:45,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:34:45,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea4f01c-6a52-4f2b-9ab6-f5618cd53ed7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:34:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:34:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:34:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:34:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:34:46,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:34:46,933 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 09:34:46,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:46 BoogieIcfgContainer [2021-11-09 09:34:46,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:34:46,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:34:46,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:34:46,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:34:46,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:34:44" (1/3) ... [2021-11-09 09:34:46,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5098f58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:46, skipping insertion in model container [2021-11-09 09:34:46,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:45" (2/3) ... [2021-11-09 09:34:46,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5098f58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:46, skipping insertion in model container [2021-11-09 09:34:46,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:46" (3/3) ... [2021-11-09 09:34:46,961 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-09 09:34:46,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:34:46,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-09 09:34:47,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:34:47,060 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 09:34:47,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-09 09:34:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 345 states have (on average 1.8376811594202898) internal successors, (634), 356 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 09:34:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 09:34:47,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:47,107 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] [2021-11-09 09:34:47,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1863160701, now seen corresponding path program 1 times [2021-11-09 09:34:47,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:47,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558581265] [2021-11-09 09:34:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:47,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:47,554 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 09:34:47,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:47,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558581265] [2021-11-09 09:34:47,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558581265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:47,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:47,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:34:47,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023383584] [2021-11-09 09:34:47,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:47,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:47,588 INFO L87 Difference]: Start difference. First operand has 357 states, 345 states have (on average 1.8376811594202898) internal successors, (634), 356 states have internal predecessors, (634), 0 states have call successors, (0), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 09:34:48,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:48,011 INFO L93 Difference]: Finished difference Result 569 states and 972 transitions. [2021-11-09 09:34:48,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:48,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-09 09:34:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:48,035 INFO L225 Difference]: With dead ends: 569 [2021-11-09 09:34:48,035 INFO L226 Difference]: Without dead ends: 302 [2021-11-09 09:34:48,043 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 09:34:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-09 09:34:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-11-09 09:34:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.2920962199312716) internal successors, (376), 301 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 09:34:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 376 transitions. [2021-11-09 09:34:48,136 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 376 transitions. Word has length 58 [2021-11-09 09:34:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:48,137 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 376 transitions. [2021-11-09 09:34:48,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 09:34:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 376 transitions. [2021-11-09 09:34:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 09:34:48,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:48,141 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] [2021-11-09 09:34:48,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:34:48,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1916681546, now seen corresponding path program 1 times [2021-11-09 09:34:48,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:48,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10132228] [2021-11-09 09:34:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:48,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:48,316 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 09:34:48,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:48,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10132228] [2021-11-09 09:34:48,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10132228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:48,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:48,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:34:48,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584484071] [2021-11-09 09:34:48,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:48,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:48,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:48,324 INFO L87 Difference]: Start difference. First operand 302 states and 376 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:48,587 INFO L93 Difference]: Finished difference Result 505 states and 646 transitions. [2021-11-09 09:34:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:48,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 09:34:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:48,590 INFO L225 Difference]: With dead ends: 505 [2021-11-09 09:34:48,591 INFO L226 Difference]: Without dead ends: 267 [2021-11-09 09:34:48,593 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 09:34:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-09 09:34:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-09 09:34:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 256 states have (on average 1.3125) internal successors, (336), 266 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 336 transitions. [2021-11-09 09:34:48,630 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 336 transitions. Word has length 59 [2021-11-09 09:34:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:48,631 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 336 transitions. [2021-11-09 09:34:48,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 336 transitions. [2021-11-09 09:34:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 09:34:48,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:48,638 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] [2021-11-09 09:34:48,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:34:48,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:48,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2098991103, now seen corresponding path program 1 times [2021-11-09 09:34:48,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:48,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999103959] [2021-11-09 09:34:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:48,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:48,837 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 09:34:48,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:48,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999103959] [2021-11-09 09:34:48,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999103959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:48,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:48,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:48,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681796487] [2021-11-09 09:34:48,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:34:48,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:34:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:48,848 INFO L87 Difference]: Start difference. First operand 267 states and 336 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 09:34:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:49,127 INFO L93 Difference]: Finished difference Result 599 states and 776 transitions. [2021-11-09 09:34:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-09 09:34:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:49,130 INFO L225 Difference]: With dead ends: 599 [2021-11-09 09:34:49,130 INFO L226 Difference]: Without dead ends: 380 [2021-11-09 09:34:49,131 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 09:34:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-09 09:34:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 350. [2021-11-09 09:34:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 339 states have (on average 1.3716814159292035) internal successors, (465), 349 states have internal predecessors, (465), 0 states have call successors, (0), 0 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 09:34:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 465 transitions. [2021-11-09 09:34:49,155 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 465 transitions. Word has length 60 [2021-11-09 09:34:49,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:49,157 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 465 transitions. [2021-11-09 09:34:49,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 09:34:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 465 transitions. [2021-11-09 09:34:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:34:49,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:49,159 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] [2021-11-09 09:34:49,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:34:49,159 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1748516954, now seen corresponding path program 1 times [2021-11-09 09:34:49,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:49,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915004240] [2021-11-09 09:34:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:49,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:49,300 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 09:34:49,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:49,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915004240] [2021-11-09 09:34:49,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915004240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:49,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:49,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:49,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426200542] [2021-11-09 09:34:49,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:34:49,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:34:49,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:49,303 INFO L87 Difference]: Start difference. First operand 350 states and 465 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:49,545 INFO L93 Difference]: Finished difference Result 818 states and 1096 transitions. [2021-11-09 09:34:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:49,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 09:34:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:49,549 INFO L225 Difference]: With dead ends: 818 [2021-11-09 09:34:49,549 INFO L226 Difference]: Without dead ends: 511 [2021-11-09 09:34:49,550 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 09:34:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-09 09:34:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 471. [2021-11-09 09:34:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.3891304347826088) internal successors, (639), 470 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 09:34:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 639 transitions. [2021-11-09 09:34:49,584 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 639 transitions. Word has length 61 [2021-11-09 09:34:49,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:49,584 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 639 transitions. [2021-11-09 09:34:49,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 639 transitions. [2021-11-09 09:34:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:34:49,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:49,605 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] [2021-11-09 09:34:49,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:34:49,605 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:49,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash 207205371, now seen corresponding path program 1 times [2021-11-09 09:34:49,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:49,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549950479] [2021-11-09 09:34:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:49,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:49,806 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 09:34:49,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:49,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549950479] [2021-11-09 09:34:49,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549950479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:49,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:49,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:34:49,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174545758] [2021-11-09 09:34:49,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:49,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:49,812 INFO L87 Difference]: Start difference. First operand 471 states and 639 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:50,678 INFO L93 Difference]: Finished difference Result 1468 states and 2099 transitions. [2021-11-09 09:34:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:34:50,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-09 09:34:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:50,687 INFO L225 Difference]: With dead ends: 1468 [2021-11-09 09:34:50,687 INFO L226 Difference]: Without dead ends: 1224 [2021-11-09 09:34:50,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:34:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-09 09:34:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 471. [2021-11-09 09:34:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.3869565217391304) internal successors, (638), 470 states have internal predecessors, (638), 0 states have call successors, (0), 0 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 09:34:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 638 transitions. [2021-11-09 09:34:50,751 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 638 transitions. Word has length 62 [2021-11-09 09:34:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:50,751 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 638 transitions. [2021-11-09 09:34:50,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 638 transitions. [2021-11-09 09:34:50,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:34:50,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:50,753 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] [2021-11-09 09:34:50,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:34:50,754 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:50,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash -201639857, now seen corresponding path program 1 times [2021-11-09 09:34:50,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:50,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46893558] [2021-11-09 09:34:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:50,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:50,909 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 09:34:50,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:50,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46893558] [2021-11-09 09:34:50,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46893558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:50,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:50,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:34:50,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612633769] [2021-11-09 09:34:50,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:50,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:50,912 INFO L87 Difference]: Start difference. First operand 471 states and 638 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:51,901 INFO L93 Difference]: Finished difference Result 1141 states and 1624 transitions. [2021-11-09 09:34:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:34:51,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-09 09:34:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:51,909 INFO L225 Difference]: With dead ends: 1141 [2021-11-09 09:34:51,909 INFO L226 Difference]: Without dead ends: 923 [2021-11-09 09:34:51,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:34:51,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-09 09:34:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 471. [2021-11-09 09:34:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.3847826086956523) internal successors, (637), 470 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 09:34:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 637 transitions. [2021-11-09 09:34:51,964 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 637 transitions. Word has length 62 [2021-11-09 09:34:51,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:51,965 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 637 transitions. [2021-11-09 09:34:51,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 637 transitions. [2021-11-09 09:34:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:34:51,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:51,967 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] [2021-11-09 09:34:51,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:34:51,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1938423665, now seen corresponding path program 1 times [2021-11-09 09:34:51,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:51,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902138481] [2021-11-09 09:34:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:51,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:52,100 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 09:34:52,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:52,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902138481] [2021-11-09 09:34:52,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902138481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:52,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:52,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:34:52,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741387402] [2021-11-09 09:34:52,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:52,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:52,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:52,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:52,103 INFO L87 Difference]: Start difference. First operand 471 states and 637 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:52,958 INFO L93 Difference]: Finished difference Result 1477 states and 2104 transitions. [2021-11-09 09:34:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:34:52,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-09 09:34:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:52,966 INFO L225 Difference]: With dead ends: 1477 [2021-11-09 09:34:52,967 INFO L226 Difference]: Without dead ends: 1224 [2021-11-09 09:34:52,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:34:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-09 09:34:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 471. [2021-11-09 09:34:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.382608695652174) internal successors, (636), 470 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 09:34:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 636 transitions. [2021-11-09 09:34:53,027 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 636 transitions. Word has length 62 [2021-11-09 09:34:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:53,028 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 636 transitions. [2021-11-09 09:34:53,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 636 transitions. [2021-11-09 09:34:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:34:53,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:53,030 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] [2021-11-09 09:34:53,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:34:53,030 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:53,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1233191565, now seen corresponding path program 1 times [2021-11-09 09:34:53,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:53,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73508757] [2021-11-09 09:34:53,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:53,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:53,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:53,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73508757] [2021-11-09 09:34:53,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73508757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:53,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:53,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:34:53,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172680070] [2021-11-09 09:34:53,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:34:53,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:53,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:34:53,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:34:53,229 INFO L87 Difference]: Start difference. First operand 471 states and 636 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:53,683 INFO L93 Difference]: Finished difference Result 938 states and 1282 transitions. [2021-11-09 09:34:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:34:53,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-09 09:34:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:53,688 INFO L225 Difference]: With dead ends: 938 [2021-11-09 09:34:53,688 INFO L226 Difference]: Without dead ends: 614 [2021-11-09 09:34:53,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:34:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-09 09:34:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 471. [2021-11-09 09:34:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.3804347826086956) internal successors, (635), 470 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 09:34:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 635 transitions. [2021-11-09 09:34:53,744 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 635 transitions. Word has length 62 [2021-11-09 09:34:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:53,744 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 635 transitions. [2021-11-09 09:34:53,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 09:34:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 635 transitions. [2021-11-09 09:34:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:34:53,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:53,746 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] [2021-11-09 09:34:53,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:34:53,746 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:53,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:53,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2031197374, now seen corresponding path program 1 times [2021-11-09 09:34:53,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:53,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609409717] [2021-11-09 09:34:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:53,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:53,881 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 09:34:53,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:53,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609409717] [2021-11-09 09:34:53,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609409717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:53,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:53,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:34:53,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372519971] [2021-11-09 09:34:53,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:53,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:53,884 INFO L87 Difference]: Start difference. First operand 471 states and 635 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:34:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:54,745 INFO L93 Difference]: Finished difference Result 1422 states and 2029 transitions. [2021-11-09 09:34:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:34:54,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-09 09:34:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:54,771 INFO L225 Difference]: With dead ends: 1422 [2021-11-09 09:34:54,771 INFO L226 Difference]: Without dead ends: 1208 [2021-11-09 09:34:54,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:34:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-09 09:34:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 471. [2021-11-09 09:34:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.376086956521739) internal successors, (633), 470 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 09:34:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 633 transitions. [2021-11-09 09:34:54,848 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 633 transitions. Word has length 64 [2021-11-09 09:34:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:54,848 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 633 transitions. [2021-11-09 09:34:54,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:34:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 633 transitions. [2021-11-09 09:34:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:34:54,852 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:54,852 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] [2021-11-09 09:34:54,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:34:54,853 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -119000272, now seen corresponding path program 1 times [2021-11-09 09:34:54,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:54,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960406400] [2021-11-09 09:34:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:54,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:55,121 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 09:34:55,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:55,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960406400] [2021-11-09 09:34:55,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960406400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:55,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:55,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:34:55,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872316661] [2021-11-09 09:34:55,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:34:55,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:34:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:34:55,123 INFO L87 Difference]: Start difference. First operand 471 states and 633 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:34:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:57,600 INFO L93 Difference]: Finished difference Result 1905 states and 2729 transitions. [2021-11-09 09:34:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:34:57,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-09 09:34:57,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:57,612 INFO L225 Difference]: With dead ends: 1905 [2021-11-09 09:34:57,612 INFO L226 Difference]: Without dead ends: 1682 [2021-11-09 09:34:57,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:34:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-09 09:34:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 471. [2021-11-09 09:34:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.373913043478261) internal successors, (632), 470 states have internal predecessors, (632), 0 states have call successors, (0), 0 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 09:34:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 632 transitions. [2021-11-09 09:34:57,709 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 632 transitions. Word has length 64 [2021-11-09 09:34:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:57,710 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 632 transitions. [2021-11-09 09:34:57,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:34:57,710 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 632 transitions. [2021-11-09 09:34:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:34:57,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:57,711 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] [2021-11-09 09:34:57,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:34:57,712 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:57,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1520301075, now seen corresponding path program 1 times [2021-11-09 09:34:57,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:57,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868680678] [2021-11-09 09:34:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:57,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:57,850 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 09:34:57,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:57,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868680678] [2021-11-09 09:34:57,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868680678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:57,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:57,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:34:57,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605801727] [2021-11-09 09:34:57,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:34:57,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:34:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:34:57,853 INFO L87 Difference]: Start difference. First operand 471 states and 632 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:34:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:58,839 INFO L93 Difference]: Finished difference Result 1416 states and 2019 transitions. [2021-11-09 09:34:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:34:58,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-09 09:34:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:58,847 INFO L225 Difference]: With dead ends: 1416 [2021-11-09 09:34:58,848 INFO L226 Difference]: Without dead ends: 1208 [2021-11-09 09:34:58,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:34:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-09 09:34:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 471. [2021-11-09 09:34:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.3717391304347826) internal successors, (631), 470 states have internal predecessors, (631), 0 states have call successors, (0), 0 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 09:34:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 631 transitions. [2021-11-09 09:34:58,926 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 631 transitions. Word has length 64 [2021-11-09 09:34:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:58,926 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 631 transitions. [2021-11-09 09:34:58,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:34:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 631 transitions. [2021-11-09 09:34:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:34:58,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:58,928 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] [2021-11-09 09:34:58,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:34:58,928 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:34:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1508633347, now seen corresponding path program 1 times [2021-11-09 09:34:58,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:58,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145319463] [2021-11-09 09:34:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:58,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:59,104 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 09:34:59,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:59,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145319463] [2021-11-09 09:34:59,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145319463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:59,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:59,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:34:59,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734094571] [2021-11-09 09:34:59,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:59,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:34:59,107 INFO L87 Difference]: Start difference. First operand 471 states and 631 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:35:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:01,326 INFO L93 Difference]: Finished difference Result 2306 states and 3323 transitions. [2021-11-09 09:35:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:35:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-09 09:35:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:01,341 INFO L225 Difference]: With dead ends: 2306 [2021-11-09 09:35:01,341 INFO L226 Difference]: Without dead ends: 2301 [2021-11-09 09:35:01,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:35:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2021-11-09 09:35:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 475. [2021-11-09 09:35:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 464 states have (on average 1.3685344827586208) internal successors, (635), 474 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 09:35:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 635 transitions. [2021-11-09 09:35:01,470 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 635 transitions. Word has length 64 [2021-11-09 09:35:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:01,470 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 635 transitions. [2021-11-09 09:35:01,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:35:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 635 transitions. [2021-11-09 09:35:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:35:01,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:01,472 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] [2021-11-09 09:35:01,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:35:01,472 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:01,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:01,473 INFO L85 PathProgramCache]: Analyzing trace with hash -904154553, now seen corresponding path program 1 times [2021-11-09 09:35:01,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:01,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414945037] [2021-11-09 09:35:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:01,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:01,626 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 09:35:01,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:01,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414945037] [2021-11-09 09:35:01,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414945037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:01,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:01,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:35:01,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87624183] [2021-11-09 09:35:01,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:35:01,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:35:01,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:01,629 INFO L87 Difference]: Start difference. First operand 475 states and 635 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:35:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:02,727 INFO L93 Difference]: Finished difference Result 1213 states and 1706 transitions. [2021-11-09 09:35:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:35:02,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-09 09:35:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:02,736 INFO L225 Difference]: With dead ends: 1213 [2021-11-09 09:35:02,737 INFO L226 Difference]: Without dead ends: 1208 [2021-11-09 09:35:02,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:35:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-09 09:35:02,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 475. [2021-11-09 09:35:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 464 states have (on average 1.3663793103448276) internal successors, (634), 474 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 09:35:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 634 transitions. [2021-11-09 09:35:02,851 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 634 transitions. Word has length 64 [2021-11-09 09:35:02,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:02,851 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 634 transitions. [2021-11-09 09:35:02,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:35:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 634 transitions. [2021-11-09 09:35:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:35:02,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:02,853 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] [2021-11-09 09:35:02,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:35:02,853 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1008042549, now seen corresponding path program 1 times [2021-11-09 09:35:02,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:02,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471012860] [2021-11-09 09:35:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:02,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:03,041 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 09:35:03,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:03,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471012860] [2021-11-09 09:35:03,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471012860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:03,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:03,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:35:03,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115778206] [2021-11-09 09:35:03,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:35:03,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:35:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:03,043 INFO L87 Difference]: Start difference. First operand 475 states and 634 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:35:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:04,096 INFO L93 Difference]: Finished difference Result 944 states and 1311 transitions. [2021-11-09 09:35:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:35:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-09 09:35:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:04,103 INFO L225 Difference]: With dead ends: 944 [2021-11-09 09:35:04,103 INFO L226 Difference]: Without dead ends: 927 [2021-11-09 09:35:04,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:35:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-09 09:35:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 475. [2021-11-09 09:35:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 464 states have (on average 1.3642241379310345) internal successors, (633), 474 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 09:35:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 633 transitions. [2021-11-09 09:35:04,223 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 633 transitions. Word has length 64 [2021-11-09 09:35:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:04,223 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 633 transitions. [2021-11-09 09:35:04,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 09:35:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 633 transitions. [2021-11-09 09:35:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:35:04,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:04,225 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] [2021-11-09 09:35:04,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:35:04,225 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash -743174492, now seen corresponding path program 1 times [2021-11-09 09:35:04,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:04,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654414898] [2021-11-09 09:35:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:04,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:04,367 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 09:35:04,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:04,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654414898] [2021-11-09 09:35:04,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654414898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:04,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:04,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:35:04,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711707026] [2021-11-09 09:35:04,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:35:04,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:35:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:04,369 INFO L87 Difference]: Start difference. First operand 475 states and 633 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:05,354 INFO L93 Difference]: Finished difference Result 1213 states and 1704 transitions. [2021-11-09 09:35:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:35:05,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-09 09:35:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:05,362 INFO L225 Difference]: With dead ends: 1213 [2021-11-09 09:35:05,362 INFO L226 Difference]: Without dead ends: 1208 [2021-11-09 09:35:05,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:35:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-09 09:35:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 471. [2021-11-09 09:35:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.3652173913043477) internal successors, (628), 470 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 09:35:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 628 transitions. [2021-11-09 09:35:05,476 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 628 transitions. Word has length 65 [2021-11-09 09:35:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:05,476 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 628 transitions. [2021-11-09 09:35:05,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 628 transitions. [2021-11-09 09:35:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:35:05,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:05,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:05,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:35:05,480 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1642672525, now seen corresponding path program 1 times [2021-11-09 09:35:05,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:05,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615926164] [2021-11-09 09:35:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:05,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:05,655 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 09:35:05,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:05,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615926164] [2021-11-09 09:35:05,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615926164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:05,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:05,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:35:05,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899113025] [2021-11-09 09:35:05,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:35:05,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:05,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:35:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:05,660 INFO L87 Difference]: Start difference. First operand 471 states and 628 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:06,652 INFO L93 Difference]: Finished difference Result 1146 states and 1619 transitions. [2021-11-09 09:35:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:35:06,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-09 09:35:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:06,658 INFO L225 Difference]: With dead ends: 1146 [2021-11-09 09:35:06,659 INFO L226 Difference]: Without dead ends: 923 [2021-11-09 09:35:06,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:35:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-09 09:35:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 471. [2021-11-09 09:35:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 460 states have (on average 1.3630434782608696) internal successors, (627), 470 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 09:35:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 627 transitions. [2021-11-09 09:35:06,768 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 627 transitions. Word has length 65 [2021-11-09 09:35:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:06,769 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 627 transitions. [2021-11-09 09:35:06,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 627 transitions. [2021-11-09 09:35:06,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:06,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:06,777 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] [2021-11-09 09:35:06,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:35:06,777 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash 370944031, now seen corresponding path program 1 times [2021-11-09 09:35:06,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:06,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647699874] [2021-11-09 09:35:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:06,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:07,992 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 09:35:07,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:07,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647699874] [2021-11-09 09:35:07,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647699874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:07,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:07,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-09 09:35:07,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138410403] [2021-11-09 09:35:07,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:35:07,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:07,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:35:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:35:07,995 INFO L87 Difference]: Start difference. First operand 471 states and 627 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:12,891 INFO L93 Difference]: Finished difference Result 1622 states and 2236 transitions. [2021-11-09 09:35:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:35:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-09 09:35:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:12,902 INFO L225 Difference]: With dead ends: 1622 [2021-11-09 09:35:12,902 INFO L226 Difference]: Without dead ends: 1412 [2021-11-09 09:35:12,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=339, Invalid=1467, Unknown=0, NotChecked=0, Total=1806 [2021-11-09 09:35:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2021-11-09 09:35:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 477. [2021-11-09 09:35:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 466 states have (on average 1.3626609442060085) internal successors, (635), 476 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 09:35:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 635 transitions. [2021-11-09 09:35:13,066 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 635 transitions. Word has length 66 [2021-11-09 09:35:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:13,066 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 635 transitions. [2021-11-09 09:35:13,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:13,067 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 635 transitions. [2021-11-09 09:35:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:13,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:13,069 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] [2021-11-09 09:35:13,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:35:13,069 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:13,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1409573117, now seen corresponding path program 1 times [2021-11-09 09:35:13,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:13,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732989472] [2021-11-09 09:35:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:13,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:14,340 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 09:35:14,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:14,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732989472] [2021-11-09 09:35:14,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732989472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:14,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:14,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-09 09:35:14,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227553749] [2021-11-09 09:35:14,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:35:14,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:35:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:35:14,343 INFO L87 Difference]: Start difference. First operand 477 states and 635 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:19,835 INFO L93 Difference]: Finished difference Result 2408 states and 3457 transitions. [2021-11-09 09:35:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:35:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-09 09:35:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:19,847 INFO L225 Difference]: With dead ends: 2408 [2021-11-09 09:35:19,848 INFO L226 Difference]: Without dead ends: 2195 [2021-11-09 09:35:19,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=407, Invalid=1755, Unknown=0, NotChecked=0, Total=2162 [2021-11-09 09:35:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-11-09 09:35:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 472. [2021-11-09 09:35:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 461 states have (on average 1.3600867678958786) internal successors, (627), 471 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 09:35:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 627 transitions. [2021-11-09 09:35:19,989 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 627 transitions. Word has length 66 [2021-11-09 09:35:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:19,989 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 627 transitions. [2021-11-09 09:35:19,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 627 transitions. [2021-11-09 09:35:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:19,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:19,991 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] [2021-11-09 09:35:19,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:35:19,992 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1856476640, now seen corresponding path program 1 times [2021-11-09 09:35:19,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:19,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57506527] [2021-11-09 09:35:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:19,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:20,993 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 09:35:20,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:20,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57506527] [2021-11-09 09:35:20,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57506527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:20,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:20,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-09 09:35:20,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657421875] [2021-11-09 09:35:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 09:35:20,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 09:35:20,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-11-09 09:35:20,996 INFO L87 Difference]: Start difference. First operand 472 states and 627 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:26,770 INFO L93 Difference]: Finished difference Result 2708 states and 3882 transitions. [2021-11-09 09:35:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 09:35:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-09 09:35:26,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:26,785 INFO L225 Difference]: With dead ends: 2708 [2021-11-09 09:35:26,785 INFO L226 Difference]: Without dead ends: 2499 [2021-11-09 09:35:26,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=421, Invalid=1931, Unknown=0, NotChecked=0, Total=2352 [2021-11-09 09:35:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-11-09 09:35:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 469. [2021-11-09 09:35:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 458 states have (on average 1.3602620087336244) internal successors, (623), 468 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 09:35:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 623 transitions. [2021-11-09 09:35:26,969 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 623 transitions. Word has length 66 [2021-11-09 09:35:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:26,970 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 623 transitions. [2021-11-09 09:35:26,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 623 transitions. [2021-11-09 09:35:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:26,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:26,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:26,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:35:26,973 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1246346588, now seen corresponding path program 1 times [2021-11-09 09:35:26,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:26,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71754891] [2021-11-09 09:35:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:26,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:27,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:27,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71754891] [2021-11-09 09:35:27,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71754891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:27,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:27,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-09 09:35:27,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986567876] [2021-11-09 09:35:27,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:35:27,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:35:27,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:35:27,832 INFO L87 Difference]: Start difference. First operand 469 states and 623 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:31,743 INFO L93 Difference]: Finished difference Result 1607 states and 2217 transitions. [2021-11-09 09:35:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:35:31,743 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-09 09:35:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:31,750 INFO L225 Difference]: With dead ends: 1607 [2021-11-09 09:35:31,750 INFO L226 Difference]: Without dead ends: 1394 [2021-11-09 09:35:31,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2021-11-09 09:35:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-09 09:35:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 475. [2021-11-09 09:35:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 464 states have (on average 1.355603448275862) internal successors, (629), 474 states have internal predecessors, (629), 0 states have call successors, (0), 0 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 09:35:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 629 transitions. [2021-11-09 09:35:31,929 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 629 transitions. Word has length 66 [2021-11-09 09:35:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:31,930 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 629 transitions. [2021-11-09 09:35:31,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 629 transitions. [2021-11-09 09:35:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:31,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:31,932 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] [2021-11-09 09:35:31,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 09:35:31,932 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:31,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1787778406, now seen corresponding path program 1 times [2021-11-09 09:35:31,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:31,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461550434] [2021-11-09 09:35:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:31,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:32,846 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 09:35:32,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:32,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461550434] [2021-11-09 09:35:32,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461550434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:32,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:32,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-09 09:35:32,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104154162] [2021-11-09 09:35:32,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:35:32,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:35:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:35:32,848 INFO L87 Difference]: Start difference. First operand 475 states and 629 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:36,528 INFO L93 Difference]: Finished difference Result 1603 states and 2219 transitions. [2021-11-09 09:35:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:35:36,529 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-09 09:35:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:36,535 INFO L225 Difference]: With dead ends: 1603 [2021-11-09 09:35:36,536 INFO L226 Difference]: Without dead ends: 1393 [2021-11-09 09:35:36,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=368, Invalid=1702, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:35:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-09 09:35:36,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 490. [2021-11-09 09:35:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 479 states have (on average 1.3569937369519833) internal successors, (650), 489 states have internal predecessors, (650), 0 states have call successors, (0), 0 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 09:35:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 650 transitions. [2021-11-09 09:35:36,708 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 650 transitions. Word has length 66 [2021-11-09 09:35:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:36,709 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 650 transitions. [2021-11-09 09:35:36,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 650 transitions. [2021-11-09 09:35:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:36,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:36,710 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] [2021-11-09 09:35:36,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 09:35:36,711 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:36,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1127331716, now seen corresponding path program 1 times [2021-11-09 09:35:36,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:36,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326477404] [2021-11-09 09:35:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:36,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:37,591 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 09:35:37,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:37,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326477404] [2021-11-09 09:35:37,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326477404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:37,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:37,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-09 09:35:37,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984766943] [2021-11-09 09:35:37,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:35:37,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:37,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:35:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:35:37,593 INFO L87 Difference]: Start difference. First operand 490 states and 650 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:42,008 INFO L93 Difference]: Finished difference Result 1430 states and 1936 transitions. [2021-11-09 09:35:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:35:42,010 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-09 09:35:42,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:42,016 INFO L225 Difference]: With dead ends: 1430 [2021-11-09 09:35:42,017 INFO L226 Difference]: Without dead ends: 1426 [2021-11-09 09:35:42,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=385, Invalid=1871, Unknown=0, NotChecked=0, Total=2256 [2021-11-09 09:35:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-11-09 09:35:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 500. [2021-11-09 09:35:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 489 states have (on average 1.3578732106339468) internal successors, (664), 499 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 09:35:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 664 transitions. [2021-11-09 09:35:42,160 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 664 transitions. Word has length 66 [2021-11-09 09:35:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:42,161 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 664 transitions. [2021-11-09 09:35:42,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 664 transitions. [2021-11-09 09:35:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:42,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:42,162 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] [2021-11-09 09:35:42,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 09:35:42,162 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash -653185432, now seen corresponding path program 1 times [2021-11-09 09:35:42,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:42,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686426212] [2021-11-09 09:35:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:42,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:43,058 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 09:35:43,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:43,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686426212] [2021-11-09 09:35:43,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686426212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:43,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:43,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-09 09:35:43,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425332701] [2021-11-09 09:35:43,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:35:43,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:35:43,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:35:43,061 INFO L87 Difference]: Start difference. First operand 500 states and 664 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:47,585 INFO L93 Difference]: Finished difference Result 1595 states and 2217 transitions. [2021-11-09 09:35:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:35:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-09 09:35:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:47,589 INFO L225 Difference]: With dead ends: 1595 [2021-11-09 09:35:47,589 INFO L226 Difference]: Without dead ends: 1382 [2021-11-09 09:35:47,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=332, Invalid=1648, Unknown=0, NotChecked=0, Total=1980 [2021-11-09 09:35:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-11-09 09:35:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 505. [2021-11-09 09:35:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 494 states have (on average 1.3562753036437247) internal successors, (670), 504 states have internal predecessors, (670), 0 states have call successors, (0), 0 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 09:35:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 670 transitions. [2021-11-09 09:35:47,759 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 670 transitions. Word has length 66 [2021-11-09 09:35:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:47,760 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 670 transitions. [2021-11-09 09:35:47,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 670 transitions. [2021-11-09 09:35:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:35:47,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:47,762 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] [2021-11-09 09:35:47,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 09:35:47,762 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -670125992, now seen corresponding path program 1 times [2021-11-09 09:35:47,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:47,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990105875] [2021-11-09 09:35:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:47,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:47,936 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 09:35:47,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:47,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990105875] [2021-11-09 09:35:47,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990105875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:47,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:47,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:35:47,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843945477] [2021-11-09 09:35:47,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:35:47,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:47,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:35:47,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:47,938 INFO L87 Difference]: Start difference. First operand 505 states and 670 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:50,038 INFO L93 Difference]: Finished difference Result 2329 states and 3344 transitions. [2021-11-09 09:35:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:35:50,038 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:35:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:50,044 INFO L225 Difference]: With dead ends: 2329 [2021-11-09 09:35:50,045 INFO L226 Difference]: Without dead ends: 2322 [2021-11-09 09:35:50,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:35:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-11-09 09:35:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 509. [2021-11-09 09:35:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 498 states have (on average 1.3514056224899598) internal successors, (673), 508 states have internal predecessors, (673), 0 states have call successors, (0), 0 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 09:35:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 673 transitions. [2021-11-09 09:35:50,228 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 673 transitions. Word has length 67 [2021-11-09 09:35:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:50,228 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 673 transitions. [2021-11-09 09:35:50,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 673 transitions. [2021-11-09 09:35:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:35:50,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:50,230 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] [2021-11-09 09:35:50,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 09:35:50,231 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1209536804, now seen corresponding path program 1 times [2021-11-09 09:35:50,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:50,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962153980] [2021-11-09 09:35:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:50,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:50,766 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 09:35:50,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:50,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962153980] [2021-11-09 09:35:50,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962153980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:50,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:50,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:35:50,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260407778] [2021-11-09 09:35:50,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:35:50,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:35:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:35:50,768 INFO L87 Difference]: Start difference. First operand 509 states and 673 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:52,769 INFO L93 Difference]: Finished difference Result 1665 states and 2365 transitions. [2021-11-09 09:35:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:35:52,770 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:35:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:52,772 INFO L225 Difference]: With dead ends: 1665 [2021-11-09 09:35:52,772 INFO L226 Difference]: Without dead ends: 1389 [2021-11-09 09:35:52,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:35:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-11-09 09:35:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 451. [2021-11-09 09:35:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 441 states have (on average 1.36281179138322) internal successors, (601), 450 states have internal predecessors, (601), 0 states have call successors, (0), 0 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 09:35:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 601 transitions. [2021-11-09 09:35:52,914 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 601 transitions. Word has length 67 [2021-11-09 09:35:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:52,914 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 601 transitions. [2021-11-09 09:35:52,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 601 transitions. [2021-11-09 09:35:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:35:52,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:52,916 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] [2021-11-09 09:35:52,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 09:35:52,916 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash 705756834, now seen corresponding path program 1 times [2021-11-09 09:35:52,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:52,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847852508] [2021-11-09 09:35:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:52,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:53,475 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 09:35:53,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:53,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847852508] [2021-11-09 09:35:53,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847852508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:53,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:53,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:35:53,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921603375] [2021-11-09 09:35:53,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:35:53,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:35:53,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:35:53,478 INFO L87 Difference]: Start difference. First operand 451 states and 601 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:55,097 INFO L93 Difference]: Finished difference Result 1038 states and 1447 transitions. [2021-11-09 09:35:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:35:55,097 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:35:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:55,099 INFO L225 Difference]: With dead ends: 1038 [2021-11-09 09:35:55,099 INFO L226 Difference]: Without dead ends: 828 [2021-11-09 09:35:55,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:35:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-09 09:35:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 453. [2021-11-09 09:35:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 443 states have (on average 1.363431151241535) internal successors, (604), 452 states have internal predecessors, (604), 0 states have call successors, (0), 0 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 09:35:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 604 transitions. [2021-11-09 09:35:55,262 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 604 transitions. Word has length 67 [2021-11-09 09:35:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:55,262 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 604 transitions. [2021-11-09 09:35:55,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 604 transitions. [2021-11-09 09:35:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:35:55,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:55,263 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] [2021-11-09 09:35:55,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 09:35:55,264 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1074760314, now seen corresponding path program 1 times [2021-11-09 09:35:55,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:55,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433802726] [2021-11-09 09:35:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:55,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:55,571 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 09:35:55,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:55,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433802726] [2021-11-09 09:35:55,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433802726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:55,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:55,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:35:55,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444155233] [2021-11-09 09:35:55,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:35:55,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:35:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:35:55,573 INFO L87 Difference]: Start difference. First operand 453 states and 604 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:57,231 INFO L93 Difference]: Finished difference Result 1791 states and 2583 transitions. [2021-11-09 09:35:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:35:57,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:35:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:57,236 INFO L225 Difference]: With dead ends: 1791 [2021-11-09 09:35:57,237 INFO L226 Difference]: Without dead ends: 1570 [2021-11-09 09:35:57,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:35:57,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-11-09 09:35:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 438. [2021-11-09 09:35:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 429 states have (on average 1.3636363636363635) internal successors, (585), 437 states have internal predecessors, (585), 0 states have call successors, (0), 0 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 09:35:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 585 transitions. [2021-11-09 09:35:57,525 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 585 transitions. Word has length 67 [2021-11-09 09:35:57,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:57,526 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 585 transitions. [2021-11-09 09:35:57,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:57,527 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 585 transitions. [2021-11-09 09:35:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:35:57,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:57,528 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] [2021-11-09 09:35:57,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 09:35:57,529 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1673815221, now seen corresponding path program 1 times [2021-11-09 09:35:57,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:57,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531894260] [2021-11-09 09:35:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:57,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:57,922 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 09:35:57,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:57,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531894260] [2021-11-09 09:35:57,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531894260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:57,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:57,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:35:57,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616571310] [2021-11-09 09:35:57,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:35:57,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:57,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:35:57,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:35:57,925 INFO L87 Difference]: Start difference. First operand 438 states and 585 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:59,080 INFO L93 Difference]: Finished difference Result 1152 states and 1622 transitions. [2021-11-09 09:35:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:35:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:35:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:59,083 INFO L225 Difference]: With dead ends: 1152 [2021-11-09 09:35:59,083 INFO L226 Difference]: Without dead ends: 940 [2021-11-09 09:35:59,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:35:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-11-09 09:35:59,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 418. [2021-11-09 09:35:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 410 states have (on average 1.353658536585366) internal successors, (555), 417 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 09:35:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 555 transitions. [2021-11-09 09:35:59,242 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 555 transitions. Word has length 67 [2021-11-09 09:35:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:59,243 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 555 transitions. [2021-11-09 09:35:59,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 555 transitions. [2021-11-09 09:35:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:35:59,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:59,244 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] [2021-11-09 09:35:59,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 09:35:59,244 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:35:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1241294901, now seen corresponding path program 1 times [2021-11-09 09:35:59,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:59,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823937234] [2021-11-09 09:35:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:59,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:59,876 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 09:35:59,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:59,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823937234] [2021-11-09 09:35:59,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823937234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:59,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:59,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-09 09:35:59,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732816950] [2021-11-09 09:35:59,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 09:35:59,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 09:35:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:35:59,878 INFO L87 Difference]: Start difference. First operand 418 states and 555 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:01,719 INFO L93 Difference]: Finished difference Result 713 states and 956 transitions. [2021-11-09 09:36:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:36:01,720 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:36:01,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:01,721 INFO L225 Difference]: With dead ends: 713 [2021-11-09 09:36:01,721 INFO L226 Difference]: Without dead ends: 709 [2021-11-09 09:36:01,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:36:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-11-09 09:36:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 418. [2021-11-09 09:36:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 410 states have (on average 1.353658536585366) internal successors, (555), 417 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 09:36:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 555 transitions. [2021-11-09 09:36:01,888 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 555 transitions. Word has length 67 [2021-11-09 09:36:01,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:01,888 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 555 transitions. [2021-11-09 09:36:01,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 555 transitions. [2021-11-09 09:36:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:36:01,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:01,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:01,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 09:36:01,890 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:01,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash -539222247, now seen corresponding path program 1 times [2021-11-09 09:36:01,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:01,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694671784] [2021-11-09 09:36:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:01,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:02,759 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 09:36:02,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:02,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694671784] [2021-11-09 09:36:02,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694671784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:02,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:02,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-09 09:36:02,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173383018] [2021-11-09 09:36:02,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 09:36:02,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 09:36:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:36:02,761 INFO L87 Difference]: Start difference. First operand 418 states and 555 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:06,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:06,274 INFO L93 Difference]: Finished difference Result 1550 states and 2176 transitions. [2021-11-09 09:36:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:36:06,275 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:36:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:06,277 INFO L225 Difference]: With dead ends: 1550 [2021-11-09 09:36:06,277 INFO L226 Difference]: Without dead ends: 1337 [2021-11-09 09:36:06,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:36:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-11-09 09:36:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 403. [2021-11-09 09:36:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 1.3518987341772153) internal successors, (534), 402 states have internal predecessors, (534), 0 states have call successors, (0), 0 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 09:36:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 534 transitions. [2021-11-09 09:36:06,459 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 534 transitions. Word has length 67 [2021-11-09 09:36:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:06,459 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 534 transitions. [2021-11-09 09:36:06,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 534 transitions. [2021-11-09 09:36:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:36:06,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:06,460 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] [2021-11-09 09:36:06,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 09:36:06,460 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:06,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1128954968, now seen corresponding path program 1 times [2021-11-09 09:36:06,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:06,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483133156] [2021-11-09 09:36:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:06,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:06,579 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 09:36:06,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:06,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483133156] [2021-11-09 09:36:06,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483133156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:06,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:06,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:36:06,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978606523] [2021-11-09 09:36:06,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:36:06,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:36:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:36:06,582 INFO L87 Difference]: Start difference. First operand 403 states and 534 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:07,359 INFO L93 Difference]: Finished difference Result 686 states and 926 transitions. [2021-11-09 09:36:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 09:36:07,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:36:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:07,361 INFO L225 Difference]: With dead ends: 686 [2021-11-09 09:36:07,361 INFO L226 Difference]: Without dead ends: 679 [2021-11-09 09:36:07,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:36:07,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-09 09:36:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 403. [2021-11-09 09:36:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 1.349367088607595) internal successors, (533), 402 states have internal predecessors, (533), 0 states have call successors, (0), 0 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 09:36:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 533 transitions. [2021-11-09 09:36:07,545 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 533 transitions. Word has length 67 [2021-11-09 09:36:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:07,545 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 533 transitions. [2021-11-09 09:36:07,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 533 transitions. [2021-11-09 09:36:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:36:07,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:07,546 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] [2021-11-09 09:36:07,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 09:36:07,547 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:07,547 INFO L85 PathProgramCache]: Analyzing trace with hash -710008920, now seen corresponding path program 1 times [2021-11-09 09:36:07,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:07,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461868816] [2021-11-09 09:36:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:07,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:07,746 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 09:36:07,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:07,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461868816] [2021-11-09 09:36:07,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461868816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:07,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:07,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:36:07,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084715714] [2021-11-09 09:36:07,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:36:07,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:36:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:36:07,749 INFO L87 Difference]: Start difference. First operand 403 states and 533 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:10,498 INFO L93 Difference]: Finished difference Result 1843 states and 2640 transitions. [2021-11-09 09:36:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:36:10,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:36:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:10,501 INFO L225 Difference]: With dead ends: 1843 [2021-11-09 09:36:10,501 INFO L226 Difference]: Without dead ends: 1612 [2021-11-09 09:36:10,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:36:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2021-11-09 09:36:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 403. [2021-11-09 09:36:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 1.3468354430379748) internal successors, (532), 402 states have internal predecessors, (532), 0 states have call successors, (0), 0 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 09:36:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 532 transitions. [2021-11-09 09:36:10,682 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 532 transitions. Word has length 67 [2021-11-09 09:36:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:10,683 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 532 transitions. [2021-11-09 09:36:10,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:10,683 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 532 transitions. [2021-11-09 09:36:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:36:10,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:10,684 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] [2021-11-09 09:36:10,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 09:36:10,685 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1303055616, now seen corresponding path program 1 times [2021-11-09 09:36:10,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:10,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397837208] [2021-11-09 09:36:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:10,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:10,859 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 09:36:10,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:10,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397837208] [2021-11-09 09:36:10,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397837208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:10,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:10,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:36:10,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342662196] [2021-11-09 09:36:10,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:36:10,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:10,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:36:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:36:10,861 INFO L87 Difference]: Start difference. First operand 403 states and 532 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:12,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:12,727 INFO L93 Difference]: Finished difference Result 1237 states and 1736 transitions. [2021-11-09 09:36:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:36:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:36:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:12,730 INFO L225 Difference]: With dead ends: 1237 [2021-11-09 09:36:12,730 INFO L226 Difference]: Without dead ends: 1230 [2021-11-09 09:36:12,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:36:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-09 09:36:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 403. [2021-11-09 09:36:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 1.3443037974683545) internal successors, (531), 402 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 09:36:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 531 transitions. [2021-11-09 09:36:12,923 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 531 transitions. Word has length 67 [2021-11-09 09:36:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:12,924 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 531 transitions. [2021-11-09 09:36:12,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 531 transitions. [2021-11-09 09:36:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:36:12,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:12,925 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] [2021-11-09 09:36:12,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 09:36:12,926 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash 926661436, now seen corresponding path program 1 times [2021-11-09 09:36:12,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:12,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378061828] [2021-11-09 09:36:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:12,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:13,767 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 09:36:13,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:13,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378061828] [2021-11-09 09:36:13,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378061828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:13,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:13,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-09 09:36:13,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743488754] [2021-11-09 09:36:13,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 09:36:13,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 09:36:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:36:13,769 INFO L87 Difference]: Start difference. First operand 403 states and 531 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:16,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:16,647 INFO L93 Difference]: Finished difference Result 1004 states and 1375 transitions. [2021-11-09 09:36:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:36:16,648 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:36:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:16,650 INFO L225 Difference]: With dead ends: 1004 [2021-11-09 09:36:16,650 INFO L226 Difference]: Without dead ends: 1000 [2021-11-09 09:36:16,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=343, Invalid=1139, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:36:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-11-09 09:36:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 417. [2021-11-09 09:36:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 409 states have (on average 1.3447432762836187) internal successors, (550), 416 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 09:36:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 550 transitions. [2021-11-09 09:36:16,891 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 550 transitions. Word has length 67 [2021-11-09 09:36:16,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:16,891 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 550 transitions. [2021-11-09 09:36:16,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 550 transitions. [2021-11-09 09:36:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:36:16,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:16,893 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] [2021-11-09 09:36:16,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 09:36:16,893 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash 763644804, now seen corresponding path program 1 times [2021-11-09 09:36:16,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:16,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485603382] [2021-11-09 09:36:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:16,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:17,265 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 09:36:17,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:17,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485603382] [2021-11-09 09:36:17,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485603382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:17,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:17,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:36:17,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588894406] [2021-11-09 09:36:17,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:36:17,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:36:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:36:17,267 INFO L87 Difference]: Start difference. First operand 417 states and 550 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:19,143 INFO L93 Difference]: Finished difference Result 1353 states and 1922 transitions. [2021-11-09 09:36:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:36:19,144 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:36:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:19,146 INFO L225 Difference]: With dead ends: 1353 [2021-11-09 09:36:19,147 INFO L226 Difference]: Without dead ends: 1321 [2021-11-09 09:36:19,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2021-11-09 09:36:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2021-11-09 09:36:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 409. [2021-11-09 09:36:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 401 states have (on average 1.341645885286783) internal successors, (538), 408 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 09:36:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 538 transitions. [2021-11-09 09:36:19,416 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 538 transitions. Word has length 67 [2021-11-09 09:36:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:19,417 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 538 transitions. [2021-11-09 09:36:19,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 538 transitions. [2021-11-09 09:36:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:36:19,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:19,417 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] [2021-11-09 09:36:19,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 09:36:19,418 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash 742742129, now seen corresponding path program 1 times [2021-11-09 09:36:19,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:19,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293163923] [2021-11-09 09:36:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:19,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:19,918 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 09:36:19,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:19,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293163923] [2021-11-09 09:36:19,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293163923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:19,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:19,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:36:19,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331319955] [2021-11-09 09:36:19,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:36:19,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:36:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:36:19,920 INFO L87 Difference]: Start difference. First operand 409 states and 538 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 09:36:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:21,232 INFO L93 Difference]: Finished difference Result 1195 states and 1685 transitions. [2021-11-09 09:36:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:36:21,232 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-09 09:36:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:21,234 INFO L225 Difference]: With dead ends: 1195 [2021-11-09 09:36:21,234 INFO L226 Difference]: Without dead ends: 985 [2021-11-09 09:36:21,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-11-09 09:36:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2021-11-09 09:36:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 403. [2021-11-09 09:36:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 396 states have (on average 1.3383838383838385) internal successors, (530), 402 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 09:36:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 530 transitions. [2021-11-09 09:36:21,439 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 530 transitions. Word has length 68 [2021-11-09 09:36:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:21,439 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 530 transitions. [2021-11-09 09:36:21,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 09:36:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 530 transitions. [2021-11-09 09:36:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:36:21,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:21,441 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] [2021-11-09 09:36:21,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 09:36:21,441 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash 164552875, now seen corresponding path program 1 times [2021-11-09 09:36:21,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:21,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455989234] [2021-11-09 09:36:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:21,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:21,748 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 09:36:21,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:21,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455989234] [2021-11-09 09:36:21,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455989234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:21,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:21,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:36:21,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412683931] [2021-11-09 09:36:21,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:36:21,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:21,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:36:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:36:21,751 INFO L87 Difference]: Start difference. First operand 403 states and 530 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 09:36:22,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:22,850 INFO L93 Difference]: Finished difference Result 1109 states and 1566 transitions. [2021-11-09 09:36:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:36:22,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-09 09:36:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:22,852 INFO L225 Difference]: With dead ends: 1109 [2021-11-09 09:36:22,852 INFO L226 Difference]: Without dead ends: 1071 [2021-11-09 09:36:22,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:36:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-11-09 09:36:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 359. [2021-11-09 09:36:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 355 states have (on average 1.3549295774647887) internal successors, (481), 358 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 09:36:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2021-11-09 09:36:23,110 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 68 [2021-11-09 09:36:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:23,111 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2021-11-09 09:36:23,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 09:36:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2021-11-09 09:36:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:36:23,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:23,112 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] [2021-11-09 09:36:23,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-09 09:36:23,112 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:23,113 INFO L85 PathProgramCache]: Analyzing trace with hash 816797930, now seen corresponding path program 1 times [2021-11-09 09:36:23,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:23,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941676134] [2021-11-09 09:36:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:23,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:23,235 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 09:36:23,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:23,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941676134] [2021-11-09 09:36:23,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941676134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:23,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:23,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:36:23,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908037225] [2021-11-09 09:36:23,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:36:23,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:36:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:36:23,238 INFO L87 Difference]: Start difference. First operand 359 states and 481 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 09:36:23,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:23,930 INFO L93 Difference]: Finished difference Result 717 states and 1000 transitions. [2021-11-09 09:36:23,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:36:23,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-09 09:36:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:23,932 INFO L225 Difference]: With dead ends: 717 [2021-11-09 09:36:23,935 INFO L226 Difference]: Without dead ends: 486 [2021-11-09 09:36:23,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:36:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-09 09:36:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 359. [2021-11-09 09:36:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 355 states have (on average 1.352112676056338) internal successors, (480), 358 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 09:36:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 480 transitions. [2021-11-09 09:36:24,117 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 480 transitions. Word has length 68 [2021-11-09 09:36:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:24,118 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 480 transitions. [2021-11-09 09:36:24,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 09:36:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 480 transitions. [2021-11-09 09:36:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:36:24,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:24,118 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] [2021-11-09 09:36:24,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-09 09:36:24,119 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2029286842, now seen corresponding path program 1 times [2021-11-09 09:36:24,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:24,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934924791] [2021-11-09 09:36:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:24,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:24,219 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 09:36:24,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:24,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934924791] [2021-11-09 09:36:24,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934924791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:24,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:24,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:36:24,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274098615] [2021-11-09 09:36:24,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:36:24,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:36:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:36:24,222 INFO L87 Difference]: Start difference. First operand 359 states and 480 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:25,033 INFO L93 Difference]: Finished difference Result 636 states and 868 transitions. [2021-11-09 09:36:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:36:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-09 09:36:25,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:25,036 INFO L225 Difference]: With dead ends: 636 [2021-11-09 09:36:25,036 INFO L226 Difference]: Without dead ends: 629 [2021-11-09 09:36:25,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:36:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-09 09:36:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 355. [2021-11-09 09:36:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 351 states have (on average 1.3532763532763532) internal successors, (475), 354 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 09:36:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 475 transitions. [2021-11-09 09:36:25,318 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 475 transitions. Word has length 69 [2021-11-09 09:36:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:25,318 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 475 transitions. [2021-11-09 09:36:25,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 475 transitions. [2021-11-09 09:36:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:36:25,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:25,320 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] [2021-11-09 09:36:25,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-09 09:36:25,320 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1308874992, now seen corresponding path program 1 times [2021-11-09 09:36:25,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:25,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583101411] [2021-11-09 09:36:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:25,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:26,106 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 09:36:26,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:26,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583101411] [2021-11-09 09:36:26,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583101411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:26,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:26,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-09 09:36:26,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585076387] [2021-11-09 09:36:26,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 09:36:26,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 09:36:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:36:26,108 INFO L87 Difference]: Start difference. First operand 355 states and 475 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:31,341 INFO L93 Difference]: Finished difference Result 2709 states and 3956 transitions. [2021-11-09 09:36:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:36:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-09 09:36:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:31,345 INFO L225 Difference]: With dead ends: 2709 [2021-11-09 09:36:31,345 INFO L226 Difference]: Without dead ends: 2703 [2021-11-09 09:36:31,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:36:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2021-11-09 09:36:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 371. [2021-11-09 09:36:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 1.348773841961853) internal successors, (495), 370 states have internal predecessors, (495), 0 states have call successors, (0), 0 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 09:36:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 495 transitions. [2021-11-09 09:36:31,621 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 495 transitions. Word has length 69 [2021-11-09 09:36:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:31,622 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 495 transitions. [2021-11-09 09:36:31,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 495 transitions. [2021-11-09 09:36:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:36:31,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:31,623 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] [2021-11-09 09:36:31,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-09 09:36:31,624 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash -284944504, now seen corresponding path program 1 times [2021-11-09 09:36:31,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:31,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432234900] [2021-11-09 09:36:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:31,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:32,507 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 09:36:32,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:32,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432234900] [2021-11-09 09:36:32,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432234900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:32,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:32,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-09 09:36:32,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082127943] [2021-11-09 09:36:32,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-09 09:36:32,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:32,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-09 09:36:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-11-09 09:36:32,509 INFO L87 Difference]: Start difference. First operand 371 states and 495 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:36,394 INFO L93 Difference]: Finished difference Result 1185 states and 1662 transitions. [2021-11-09 09:36:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:36:36,394 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-09 09:36:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:36,396 INFO L225 Difference]: With dead ends: 1185 [2021-11-09 09:36:36,396 INFO L226 Difference]: Without dead ends: 1177 [2021-11-09 09:36:36,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 09:36:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-09 09:36:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 375. [2021-11-09 09:36:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 371 states have (on average 1.3477088948787062) internal successors, (500), 374 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 09:36:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 500 transitions. [2021-11-09 09:36:36,714 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 500 transitions. Word has length 69 [2021-11-09 09:36:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:36,714 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 500 transitions. [2021-11-09 09:36:36,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 500 transitions. [2021-11-09 09:36:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:36:36,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:36,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:36,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-09 09:36:36,715 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:36,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1130733883, now seen corresponding path program 1 times [2021-11-09 09:36:36,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:36,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862232558] [2021-11-09 09:36:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:36,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:37,172 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 09:36:37,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:37,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862232558] [2021-11-09 09:36:37,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862232558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:37,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:37,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:36:37,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145886125] [2021-11-09 09:36:37,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:36:37,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:37,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:36:37,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:36:37,173 INFO L87 Difference]: Start difference. First operand 375 states and 500 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:39,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:39,017 INFO L93 Difference]: Finished difference Result 765 states and 1055 transitions. [2021-11-09 09:36:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 09:36:39,025 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-09 09:36:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:39,026 INFO L225 Difference]: With dead ends: 765 [2021-11-09 09:36:39,026 INFO L226 Difference]: Without dead ends: 757 [2021-11-09 09:36:39,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:36:39,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-11-09 09:36:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 375. [2021-11-09 09:36:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 371 states have (on average 1.3450134770889488) internal successors, (499), 374 states have internal predecessors, (499), 0 states have call successors, (0), 0 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 09:36:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 499 transitions. [2021-11-09 09:36:39,255 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 499 transitions. Word has length 70 [2021-11-09 09:36:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:39,255 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 499 transitions. [2021-11-09 09:36:39,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 499 transitions. [2021-11-09 09:36:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:36:39,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:39,256 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] [2021-11-09 09:36:39,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-09 09:36:39,256 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -933011809, now seen corresponding path program 1 times [2021-11-09 09:36:39,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:39,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853559919] [2021-11-09 09:36:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:39,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:39,574 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 09:36:39,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:39,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853559919] [2021-11-09 09:36:39,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853559919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:39,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:39,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:36:39,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054398228] [2021-11-09 09:36:39,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:36:39,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:36:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:36:39,577 INFO L87 Difference]: Start difference. First operand 375 states and 499 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:41,052 INFO L93 Difference]: Finished difference Result 1071 states and 1521 transitions. [2021-11-09 09:36:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:36:41,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-09 09:36:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:41,054 INFO L225 Difference]: With dead ends: 1071 [2021-11-09 09:36:41,054 INFO L226 Difference]: Without dead ends: 1065 [2021-11-09 09:36:41,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:36:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-09 09:36:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 363. [2021-11-09 09:36:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 360 states have (on average 1.3444444444444446) internal successors, (484), 362 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 09:36:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 484 transitions. [2021-11-09 09:36:41,266 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 484 transitions. Word has length 70 [2021-11-09 09:36:41,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:41,267 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 484 transitions. [2021-11-09 09:36:41,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 484 transitions. [2021-11-09 09:36:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:36:41,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:41,268 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] [2021-11-09 09:36:41,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-09 09:36:41,268 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1768135991, now seen corresponding path program 1 times [2021-11-09 09:36:41,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:41,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216063001] [2021-11-09 09:36:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:41,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:42,011 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 09:36:42,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:42,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216063001] [2021-11-09 09:36:42,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216063001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:42,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:42,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:36:42,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700051553] [2021-11-09 09:36:42,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:36:42,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:36:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:36:42,013 INFO L87 Difference]: Start difference. First operand 363 states and 484 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:44,743 INFO L93 Difference]: Finished difference Result 809 states and 1122 transitions. [2021-11-09 09:36:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:36:44,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-09 09:36:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:44,745 INFO L225 Difference]: With dead ends: 809 [2021-11-09 09:36:44,745 INFO L226 Difference]: Without dead ends: 801 [2021-11-09 09:36:44,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=244, Invalid=1016, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 09:36:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-11-09 09:36:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 352. [2021-11-09 09:36:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 349 states have (on average 1.346704871060172) internal successors, (470), 351 states have internal predecessors, (470), 0 states have call successors, (0), 0 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 09:36:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 470 transitions. [2021-11-09 09:36:44,937 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 470 transitions. Word has length 70 [2021-11-09 09:36:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:44,937 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 470 transitions. [2021-11-09 09:36:44,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 470 transitions. [2021-11-09 09:36:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:36:44,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:44,938 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] [2021-11-09 09:36:44,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-09 09:36:44,938 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash 748274130, now seen corresponding path program 1 times [2021-11-09 09:36:44,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:44,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296567207] [2021-11-09 09:36:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:44,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:45,649 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 09:36:45,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:45,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296567207] [2021-11-09 09:36:45,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296567207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:45,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:45,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:36:45,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064095866] [2021-11-09 09:36:45,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:36:45,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:36:45,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:36:45,651 INFO L87 Difference]: Start difference. First operand 352 states and 470 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:49,517 INFO L93 Difference]: Finished difference Result 1757 states and 2528 transitions. [2021-11-09 09:36:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:36:49,517 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-09 09:36:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:49,518 INFO L225 Difference]: With dead ends: 1757 [2021-11-09 09:36:49,519 INFO L226 Difference]: Without dead ends: 1745 [2021-11-09 09:36:49,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2021-11-09 09:36:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-11-09 09:36:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 363. [2021-11-09 09:36:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 360 states have (on average 1.3416666666666666) internal successors, (483), 362 states have internal predecessors, (483), 0 states have call successors, (0), 0 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 09:36:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 483 transitions. [2021-11-09 09:36:49,778 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 483 transitions. Word has length 70 [2021-11-09 09:36:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:49,778 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 483 transitions. [2021-11-09 09:36:49,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 483 transitions. [2021-11-09 09:36:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:36:49,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:49,779 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] [2021-11-09 09:36:49,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-09 09:36:49,780 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1902376886, now seen corresponding path program 1 times [2021-11-09 09:36:49,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:49,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49927797] [2021-11-09 09:36:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:49,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:50,133 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 09:36:50,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:50,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49927797] [2021-11-09 09:36:50,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49927797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:50,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:50,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 09:36:50,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385520893] [2021-11-09 09:36:50,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:36:50,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:36:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:36:50,135 INFO L87 Difference]: Start difference. First operand 363 states and 483 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:52,272 INFO L93 Difference]: Finished difference Result 1350 states and 1953 transitions. [2021-11-09 09:36:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:36:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-09 09:36:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:52,274 INFO L225 Difference]: With dead ends: 1350 [2021-11-09 09:36:52,274 INFO L226 Difference]: Without dead ends: 1335 [2021-11-09 09:36:52,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-09 09:36:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-11-09 09:36:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 337. [2021-11-09 09:36:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.3522388059701493) internal successors, (453), 336 states have internal predecessors, (453), 0 states have call successors, (0), 0 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 09:36:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 453 transitions. [2021-11-09 09:36:52,486 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 453 transitions. Word has length 70 [2021-11-09 09:36:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:52,486 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 453 transitions. [2021-11-09 09:36:52,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 09:36:52,486 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 453 transitions. [2021-11-09 09:36:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 09:36:52,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:52,487 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] [2021-11-09 09:36:52,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-09 09:36:52,488 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 298607386, now seen corresponding path program 1 times [2021-11-09 09:36:52,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:52,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654724361] [2021-11-09 09:36:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:52,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:53,090 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 09:36:53,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:53,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654724361] [2021-11-09 09:36:53,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654724361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:53,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:53,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-09 09:36:53,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173570273] [2021-11-09 09:36:53,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 09:36:53,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 09:36:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:36:53,093 INFO L87 Difference]: Start difference. First operand 337 states and 453 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:55,082 INFO L93 Difference]: Finished difference Result 756 states and 1056 transitions. [2021-11-09 09:36:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:36:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-09 09:36:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:55,084 INFO L225 Difference]: With dead ends: 756 [2021-11-09 09:36:55,084 INFO L226 Difference]: Without dead ends: 742 [2021-11-09 09:36:55,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2021-11-09 09:36:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-09 09:36:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 337. [2021-11-09 09:36:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.3492537313432835) internal successors, (452), 336 states have internal predecessors, (452), 0 states have call successors, (0), 0 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 09:36:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 452 transitions. [2021-11-09 09:36:55,295 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 452 transitions. Word has length 71 [2021-11-09 09:36:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:55,295 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 452 transitions. [2021-11-09 09:36:55,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 452 transitions. [2021-11-09 09:36:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 09:36:55,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:36:55,296 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:36:55,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-09 09:36:55,296 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:36:55,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:36:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash -879674007, now seen corresponding path program 1 times [2021-11-09 09:36:55,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:36:55,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029684645] [2021-11-09 09:36:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:36:55,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:36:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:36:56,323 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 09:36:56,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:36:56,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029684645] [2021-11-09 09:36:56,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029684645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:56,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:56,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-09 09:36:56,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494212754] [2021-11-09 09:36:56,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-09 09:36:56,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:36:56,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-09 09:36:56,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-09 09:36:56,325 INFO L87 Difference]: Start difference. First operand 337 states and 452 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:00,387 INFO L93 Difference]: Finished difference Result 1074 states and 1544 transitions. [2021-11-09 09:37:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:37:00,388 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-09 09:37:00,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:00,389 INFO L225 Difference]: With dead ends: 1074 [2021-11-09 09:37:00,389 INFO L226 Difference]: Without dead ends: 1050 [2021-11-09 09:37:00,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=307, Invalid=1253, Unknown=0, NotChecked=0, Total=1560 [2021-11-09 09:37:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-11-09 09:37:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 313. [2021-11-09 09:37:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.3717948717948718) internal successors, (428), 312 states have internal predecessors, (428), 0 states have call successors, (0), 0 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 09:37:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 428 transitions. [2021-11-09 09:37:00,616 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 428 transitions. Word has length 72 [2021-11-09 09:37:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:00,616 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 428 transitions. [2021-11-09 09:37:00,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 428 transitions. [2021-11-09 09:37:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 09:37:00,617 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:00,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:00,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-09 09:37:00,618 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1208516883, now seen corresponding path program 1 times [2021-11-09 09:37:00,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:00,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867427151] [2021-11-09 09:37:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:00,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:00,659 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 09:37:00,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:00,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867427151] [2021-11-09 09:37:00,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867427151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:00,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:00,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:37:00,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683491164] [2021-11-09 09:37:00,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:37:00,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:37:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:37:00,662 INFO L87 Difference]: Start difference. First operand 313 states and 428 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 09:37:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:01,228 INFO L93 Difference]: Finished difference Result 709 states and 1022 transitions. [2021-11-09 09:37:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:37:01,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-09 09:37:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:01,229 INFO L225 Difference]: With dead ends: 709 [2021-11-09 09:37:01,229 INFO L226 Difference]: Without dead ends: 503 [2021-11-09 09:37:01,230 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 09:37:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-11-09 09:37:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2021-11-09 09:37:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.408) internal successors, (704), 500 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 09:37:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 704 transitions. [2021-11-09 09:37:01,621 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 704 transitions. Word has length 92 [2021-11-09 09:37:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:01,622 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 704 transitions. [2021-11-09 09:37:01,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 09:37:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 704 transitions. [2021-11-09 09:37:01,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:37:01,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:01,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:01,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-09 09:37:01,624 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:01,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1324206254, now seen corresponding path program 1 times [2021-11-09 09:37:01,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:01,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947887924] [2021-11-09 09:37:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:01,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:01,667 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 09:37:01,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:01,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947887924] [2021-11-09 09:37:01,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947887924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:01,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:01,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:37:01,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979591385] [2021-11-09 09:37:01,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:37:01,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:01,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:37:01,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:37:01,669 INFO L87 Difference]: Start difference. First operand 501 states and 704 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:03,657 INFO L93 Difference]: Finished difference Result 2373 states and 3484 transitions. [2021-11-09 09:37:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:37:03,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 09:37:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:03,659 INFO L225 Difference]: With dead ends: 2373 [2021-11-09 09:37:03,659 INFO L226 Difference]: Without dead ends: 1979 [2021-11-09 09:37:03,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:37:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-11-09 09:37:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 925. [2021-11-09 09:37:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.432900432900433) internal successors, (1324), 924 states have internal predecessors, (1324), 0 states have call successors, (0), 0 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 09:37:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1324 transitions. [2021-11-09 09:37:04,417 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1324 transitions. Word has length 94 [2021-11-09 09:37:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:04,417 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1324 transitions. [2021-11-09 09:37:04,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1324 transitions. [2021-11-09 09:37:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:37:04,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:04,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:04,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-09 09:37:04,420 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1309824789, now seen corresponding path program 1 times [2021-11-09 09:37:04,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:04,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898272957] [2021-11-09 09:37:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:04,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:04,457 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 09:37:04,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:04,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898272957] [2021-11-09 09:37:04,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898272957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:04,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:04,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:37:04,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280720091] [2021-11-09 09:37:04,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:37:04,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:37:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:37:04,459 INFO L87 Difference]: Start difference. First operand 925 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:05,659 INFO L93 Difference]: Finished difference Result 2169 states and 3166 transitions. [2021-11-09 09:37:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:37:05,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 09:37:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:05,662 INFO L225 Difference]: With dead ends: 2169 [2021-11-09 09:37:05,662 INFO L226 Difference]: Without dead ends: 1351 [2021-11-09 09:37:05,664 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 09:37:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-11-09 09:37:06,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2021-11-09 09:37:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.4391691394658754) internal successors, (1940), 1348 states have internal predecessors, (1940), 0 states have call successors, (0), 0 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 09:37:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1940 transitions. [2021-11-09 09:37:06,833 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1940 transitions. Word has length 94 [2021-11-09 09:37:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:06,834 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1940 transitions. [2021-11-09 09:37:06,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:06,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1940 transitions. [2021-11-09 09:37:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:37:06,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:06,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:06,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-09 09:37:06,836 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:06,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:06,837 INFO L85 PathProgramCache]: Analyzing trace with hash 570084468, now seen corresponding path program 1 times [2021-11-09 09:37:06,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:06,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937685369] [2021-11-09 09:37:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:06,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:06,872 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 09:37:06,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:06,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937685369] [2021-11-09 09:37:06,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937685369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:06,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:06,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:37:06,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014412001] [2021-11-09 09:37:06,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:37:06,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:37:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:37:06,874 INFO L87 Difference]: Start difference. First operand 1349 states and 1940 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:08,719 INFO L93 Difference]: Finished difference Result 3221 states and 4662 transitions. [2021-11-09 09:37:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:37:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 09:37:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:08,722 INFO L225 Difference]: With dead ends: 3221 [2021-11-09 09:37:08,722 INFO L226 Difference]: Without dead ends: 1979 [2021-11-09 09:37:08,724 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 09:37:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2021-11-09 09:37:10,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1953. [2021-11-09 09:37:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1952 states have (on average 1.4221311475409837) internal successors, (2776), 1952 states have internal predecessors, (2776), 0 states have call successors, (0), 0 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 09:37:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2776 transitions. [2021-11-09 09:37:10,383 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2776 transitions. Word has length 94 [2021-11-09 09:37:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:10,383 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 2776 transitions. [2021-11-09 09:37:10,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2776 transitions. [2021-11-09 09:37:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:37:10,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:10,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:10,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-09 09:37:10,386 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash -337360546, now seen corresponding path program 1 times [2021-11-09 09:37:10,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:10,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66641667] [2021-11-09 09:37:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:10,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:10,432 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 09:37:10,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:10,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66641667] [2021-11-09 09:37:10,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66641667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:10,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:10,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:37:10,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398094452] [2021-11-09 09:37:10,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:37:10,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:37:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:37:10,434 INFO L87 Difference]: Start difference. First operand 1953 states and 2776 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:17,626 INFO L93 Difference]: Finished difference Result 9265 states and 13204 transitions. [2021-11-09 09:37:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:37:17,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 09:37:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:17,634 INFO L225 Difference]: With dead ends: 9265 [2021-11-09 09:37:17,634 INFO L226 Difference]: Without dead ends: 7419 [2021-11-09 09:37:17,637 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 09:37:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7419 states. [2021-11-09 09:37:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7419 to 3941. [2021-11-09 09:37:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3940 states have (on average 1.416243654822335) internal successors, (5580), 3940 states have internal predecessors, (5580), 0 states have call successors, (0), 0 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 09:37:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 5580 transitions. [2021-11-09 09:37:21,112 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 5580 transitions. Word has length 94 [2021-11-09 09:37:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:21,113 INFO L470 AbstractCegarLoop]: Abstraction has 3941 states and 5580 transitions. [2021-11-09 09:37:21,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 5580 transitions. [2021-11-09 09:37:21,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:37:21,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:21,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:21,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-09 09:37:21,116 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1456780136, now seen corresponding path program 1 times [2021-11-09 09:37:21,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:21,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316948726] [2021-11-09 09:37:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:21,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:21,162 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 09:37:21,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:21,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316948726] [2021-11-09 09:37:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316948726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:21,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:21,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:37:21,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129650251] [2021-11-09 09:37:21,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:37:21,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:37:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:37:21,165 INFO L87 Difference]: Start difference. First operand 3941 states and 5580 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:34,132 INFO L93 Difference]: Finished difference Result 16813 states and 23776 transitions. [2021-11-09 09:37:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:37:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 09:37:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:34,151 INFO L225 Difference]: With dead ends: 16813 [2021-11-09 09:37:34,151 INFO L226 Difference]: Without dead ends: 12979 [2021-11-09 09:37:34,156 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 09:37:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12979 states. [2021-11-09 09:37:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12979 to 8133. [2021-11-09 09:37:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 8132 states have (on average 1.411214953271028) internal successors, (11476), 8132 states have internal predecessors, (11476), 0 states have call successors, (0), 0 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 09:37:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 11476 transitions. [2021-11-09 09:37:42,164 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 11476 transitions. Word has length 94 [2021-11-09 09:37:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:42,164 INFO L470 AbstractCegarLoop]: Abstraction has 8133 states and 11476 transitions. [2021-11-09 09:37:42,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:37:42,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 11476 transitions. [2021-11-09 09:37:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 09:37:42,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:42,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:42,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-09 09:37:42,169 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:42,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1890695249, now seen corresponding path program 1 times [2021-11-09 09:37:42,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:42,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120065538] [2021-11-09 09:37:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:42,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:42,212 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 09:37:42,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:42,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120065538] [2021-11-09 09:37:42,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120065538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:42,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:42,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:37:42,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365191665] [2021-11-09 09:37:42,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:37:42,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:37:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:37:42,215 INFO L87 Difference]: Start difference. First operand 8133 states and 11476 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 09:37:49,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:37:49,535 INFO L93 Difference]: Finished difference Result 15593 states and 21982 transitions. [2021-11-09 09:37:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:37:49,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-09 09:37:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:37:49,545 INFO L225 Difference]: With dead ends: 15593 [2021-11-09 09:37:49,545 INFO L226 Difference]: Without dead ends: 7567 [2021-11-09 09:37:49,552 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 09:37:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2021-11-09 09:37:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 6177. [2021-11-09 09:37:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6177 states, 6176 states have (on average 1.3847150259067358) internal successors, (8552), 6176 states have internal predecessors, (8552), 0 states have call successors, (0), 0 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 09:37:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6177 states to 6177 states and 8552 transitions. [2021-11-09 09:37:55,674 INFO L78 Accepts]: Start accepts. Automaton has 6177 states and 8552 transitions. Word has length 95 [2021-11-09 09:37:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:37:55,674 INFO L470 AbstractCegarLoop]: Abstraction has 6177 states and 8552 transitions. [2021-11-09 09:37:55,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 09:37:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6177 states and 8552 transitions. [2021-11-09 09:37:55,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:37:55,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:37:55,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:37:55,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-09 09:37:55,677 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:37:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:37:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1736391506, now seen corresponding path program 1 times [2021-11-09 09:37:55,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:37:55,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119263561] [2021-11-09 09:37:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:37:55,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:37:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:37:55,719 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 09:37:55,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:37:55,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119263561] [2021-11-09 09:37:55,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119263561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:37:55,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:37:55,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:37:55,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068208143] [2021-11-09 09:37:55,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:37:55,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:37:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:37:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:37:55,722 INFO L87 Difference]: Start difference. First operand 6177 states and 8552 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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 09:38:01,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:01,995 INFO L93 Difference]: Finished difference Result 12291 states and 17046 transitions. [2021-11-09 09:38:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:38:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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 96 [2021-11-09 09:38:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:02,004 INFO L225 Difference]: With dead ends: 12291 [2021-11-09 09:38:02,004 INFO L226 Difference]: Without dead ends: 6221 [2021-11-09 09:38:02,010 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 09:38:02,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2021-11-09 09:38:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 6151. [2021-11-09 09:38:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6151 states, 6150 states have (on average 1.3858536585365853) internal successors, (8523), 6150 states have internal predecessors, (8523), 0 states have call successors, (0), 0 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 09:38:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 8523 transitions. [2021-11-09 09:38:07,847 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 8523 transitions. Word has length 96 [2021-11-09 09:38:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:07,847 INFO L470 AbstractCegarLoop]: Abstraction has 6151 states and 8523 transitions. [2021-11-09 09:38:07,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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 09:38:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 8523 transitions. [2021-11-09 09:38:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 09:38:07,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:07,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:07,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-09 09:38:07,849 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:38:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1608306199, now seen corresponding path program 1 times [2021-11-09 09:38:07,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:07,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107982230] [2021-11-09 09:38:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:07,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:07,892 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 09:38:07,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:07,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107982230] [2021-11-09 09:38:07,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107982230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:07,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:07,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:38:07,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699562566] [2021-11-09 09:38:07,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:38:07,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:38:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:38:07,895 INFO L87 Difference]: Start difference. First operand 6151 states and 8523 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 09:38:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:13,334 INFO L93 Difference]: Finished difference Result 11767 states and 16265 transitions. [2021-11-09 09:38:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:38:13,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 96 [2021-11-09 09:38:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:13,341 INFO L225 Difference]: With dead ends: 11767 [2021-11-09 09:38:13,341 INFO L226 Difference]: Without dead ends: 5697 [2021-11-09 09:38:13,345 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 09:38:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2021-11-09 09:38:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5515. [2021-11-09 09:38:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5514 states have (on average 1.3661588683351469) internal successors, (7533), 5514 states have internal predecessors, (7533), 0 states have call successors, (0), 0 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 09:38:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 7533 transitions. [2021-11-09 09:38:18,930 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 7533 transitions. Word has length 96 [2021-11-09 09:38:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:18,931 INFO L470 AbstractCegarLoop]: Abstraction has 5515 states and 7533 transitions. [2021-11-09 09:38:18,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 09:38:18,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 7533 transitions. [2021-11-09 09:38:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-09 09:38:18,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:18,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:18,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-09 09:38:18,932 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:38:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash -916899152, now seen corresponding path program 1 times [2021-11-09 09:38:18,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:18,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660752482] [2021-11-09 09:38:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:18,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:18,973 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 09:38:18,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:18,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660752482] [2021-11-09 09:38:18,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660752482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:18,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:18,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:38:18,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331291018] [2021-11-09 09:38:18,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:38:18,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:18,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:38:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:38:18,976 INFO L87 Difference]: Start difference. First operand 5515 states and 7533 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 09:38:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:29,565 INFO L93 Difference]: Finished difference Result 15843 states and 21527 transitions. [2021-11-09 09:38:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:38:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 97 [2021-11-09 09:38:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:29,578 INFO L225 Difference]: With dead ends: 15843 [2021-11-09 09:38:29,578 INFO L226 Difference]: Without dead ends: 10409 [2021-11-09 09:38:29,584 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 09:38:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10409 states. [2021-11-09 09:38:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10409 to 9687. [2021-11-09 09:38:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9687 states, 9686 states have (on average 1.3482345653520544) internal successors, (13059), 9686 states have internal predecessors, (13059), 0 states have call successors, (0), 0 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 09:38:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9687 states to 9687 states and 13059 transitions. [2021-11-09 09:38:39,085 INFO L78 Accepts]: Start accepts. Automaton has 9687 states and 13059 transitions. Word has length 97 [2021-11-09 09:38:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:38:39,085 INFO L470 AbstractCegarLoop]: Abstraction has 9687 states and 13059 transitions. [2021-11-09 09:38:39,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 09:38:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 9687 states and 13059 transitions. [2021-11-09 09:38:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-09 09:38:39,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:38:39,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:38:39,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-09 09:38:39,087 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:38:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:38:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2063595932, now seen corresponding path program 1 times [2021-11-09 09:38:39,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:38:39,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210671498] [2021-11-09 09:38:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:38:39,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:38:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:38:39,154 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 09:38:39,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:38:39,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210671498] [2021-11-09 09:38:39,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210671498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:38:39,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:38:39,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:38:39,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867708000] [2021-11-09 09:38:39,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:38:39,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:38:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:38:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:38:39,156 INFO L87 Difference]: Start difference. First operand 9687 states and 13059 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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 09:38:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:38:57,199 INFO L93 Difference]: Finished difference Result 16364 states and 21871 transitions. [2021-11-09 09:38:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:38:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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 98 [2021-11-09 09:38:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:38:57,228 INFO L225 Difference]: With dead ends: 16364 [2021-11-09 09:38:57,228 INFO L226 Difference]: Without dead ends: 16362 [2021-11-09 09:38:57,232 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 09:38:57,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16362 states. [2021-11-09 09:39:07,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16362 to 9975. [2021-11-09 09:39:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9975 states, 9974 states have (on average 1.3333667535592542) internal successors, (13299), 9974 states have internal predecessors, (13299), 0 states have call successors, (0), 0 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 09:39:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9975 states to 9975 states and 13299 transitions. [2021-11-09 09:39:07,696 INFO L78 Accepts]: Start accepts. Automaton has 9975 states and 13299 transitions. Word has length 98 [2021-11-09 09:39:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:07,697 INFO L470 AbstractCegarLoop]: Abstraction has 9975 states and 13299 transitions. [2021-11-09 09:39:07,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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 09:39:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9975 states and 13299 transitions. [2021-11-09 09:39:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-09 09:39:07,698 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:07,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:07,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-09 09:39:07,698 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:39:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash -777753176, now seen corresponding path program 1 times [2021-11-09 09:39:07,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:07,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668224955] [2021-11-09 09:39:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:07,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:07,743 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 09:39:07,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:07,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668224955] [2021-11-09 09:39:07,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668224955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:07,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:07,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:39:07,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999647924] [2021-11-09 09:39:07,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:39:07,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:39:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:39:07,745 INFO L87 Difference]: Start difference. First operand 9975 states and 13299 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 09:39:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:22,696 INFO L93 Difference]: Finished difference Result 23275 states and 30957 transitions. [2021-11-09 09:39:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:39:22,696 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 98 [2021-11-09 09:39:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:22,715 INFO L225 Difference]: With dead ends: 23275 [2021-11-09 09:39:22,715 INFO L226 Difference]: Without dead ends: 13381 [2021-11-09 09:39:22,724 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 09:39:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2021-11-09 09:39:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 9771. [2021-11-09 09:39:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9771 states, 9770 states have (on average 1.3120777891504607) internal successors, (12819), 9770 states have internal predecessors, (12819), 0 states have call successors, (0), 0 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 09:39:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9771 states to 9771 states and 12819 transitions. [2021-11-09 09:39:33,436 INFO L78 Accepts]: Start accepts. Automaton has 9771 states and 12819 transitions. Word has length 98 [2021-11-09 09:39:33,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:33,436 INFO L470 AbstractCegarLoop]: Abstraction has 9771 states and 12819 transitions. [2021-11-09 09:39:33,436 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 09:39:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9771 states and 12819 transitions. [2021-11-09 09:39:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-09 09:39:33,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:33,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:39:33,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-09 09:39:33,438 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:39:33,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:33,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1173003609, now seen corresponding path program 1 times [2021-11-09 09:39:33,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:33,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071540453] [2021-11-09 09:39:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:33,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:33,491 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 09:39:33,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:33,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071540453] [2021-11-09 09:39:33,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071540453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:33,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:33,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:33,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138782713] [2021-11-09 09:39:33,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:33,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:33,494 INFO L87 Difference]: Start difference. First operand 9771 states and 12819 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:46,295 INFO L93 Difference]: Finished difference Result 20911 states and 27449 transitions. [2021-11-09 09:39:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-09 09:39:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:46,308 INFO L225 Difference]: With dead ends: 20911 [2021-11-09 09:39:46,308 INFO L226 Difference]: Without dead ends: 11221 [2021-11-09 09:39:46,317 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 09:39:46,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11221 states. [2021-11-09 09:39:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11221 to 10979. [2021-11-09 09:39:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10979 states, 10978 states have (on average 1.3039715795226818) internal successors, (14315), 10978 states have internal predecessors, (14315), 0 states have call successors, (0), 0 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 09:39:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10979 states to 10979 states and 14315 transitions. [2021-11-09 09:39:58,216 INFO L78 Accepts]: Start accepts. Automaton has 10979 states and 14315 transitions. Word has length 99 [2021-11-09 09:39:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:58,216 INFO L470 AbstractCegarLoop]: Abstraction has 10979 states and 14315 transitions. [2021-11-09 09:39:58,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:39:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 10979 states and 14315 transitions. [2021-11-09 09:39:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 09:39:58,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:58,219 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:58,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-09 09:39:58,219 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:39:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 704697164, now seen corresponding path program 1 times [2021-11-09 09:39:58,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:58,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875789831] [2021-11-09 09:39:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:58,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 09:39:58,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:58,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875789831] [2021-11-09 09:39:58,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875789831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:58,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:58,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:39:58,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853389054] [2021-11-09 09:39:58,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:39:58,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:58,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:39:58,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:39:58,307 INFO L87 Difference]: Start difference. First operand 10979 states and 14315 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:40:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:51,652 INFO L93 Difference]: Finished difference Result 55973 states and 72912 transitions. [2021-11-09 09:40:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:40:51,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-09 09:40:51,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:51,728 INFO L225 Difference]: With dead ends: 55973 [2021-11-09 09:40:51,728 INFO L226 Difference]: Without dead ends: 45075 [2021-11-09 09:40:51,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:40:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45075 states. [2021-11-09 09:41:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45075 to 18755. [2021-11-09 09:41:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18755 states, 18754 states have (on average 1.3003625893142796) internal successors, (24387), 18754 states have internal predecessors, (24387), 0 states have call successors, (0), 0 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 09:41:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18755 states to 18755 states and 24387 transitions. [2021-11-09 09:41:18,229 INFO L78 Accepts]: Start accepts. Automaton has 18755 states and 24387 transitions. Word has length 123 [2021-11-09 09:41:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:18,230 INFO L470 AbstractCegarLoop]: Abstraction has 18755 states and 24387 transitions. [2021-11-09 09:41:18,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states and 24387 transitions. [2021-11-09 09:41:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 09:41:18,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:18,234 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:18,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-09 09:41:18,234 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:41:18,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1691542872, now seen corresponding path program 1 times [2021-11-09 09:41:18,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:18,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759867359] [2021-11-09 09:41:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:18,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-09 09:41:18,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:18,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759867359] [2021-11-09 09:41:18,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759867359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:18,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:18,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:41:18,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794581227] [2021-11-09 09:41:18,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:41:18,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:41:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:41:18,318 INFO L87 Difference]: Start difference. First operand 18755 states and 24387 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 09:42:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:22,394 INFO L93 Difference]: Finished difference Result 63149 states and 82168 transitions. [2021-11-09 09:42:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:42:22,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 123 [2021-11-09 09:42:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:22,476 INFO L225 Difference]: With dead ends: 63149 [2021-11-09 09:42:22,476 INFO L226 Difference]: Without dead ends: 52251 [2021-11-09 09:42:22,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:42:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52251 states. [2021-11-09 09:43:01,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52251 to 30259. [2021-11-09 09:43:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30259 states, 30258 states have (on average 1.2968140657016327) internal successors, (39239), 30258 states have internal predecessors, (39239), 0 states have call successors, (0), 0 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 09:43:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30259 states to 30259 states and 39239 transitions. [2021-11-09 09:43:01,666 INFO L78 Accepts]: Start accepts. Automaton has 30259 states and 39239 transitions. Word has length 123 [2021-11-09 09:43:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:01,666 INFO L470 AbstractCegarLoop]: Abstraction has 30259 states and 39239 transitions. [2021-11-09 09:43:01,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 09:43:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 30259 states and 39239 transitions. [2021-11-09 09:43:01,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 09:43:01,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:01,671 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:01,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-09 09:43:01,672 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:43:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash 572123282, now seen corresponding path program 1 times [2021-11-09 09:43:01,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:01,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941522511] [2021-11-09 09:43:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:01,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 09:43:01,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:01,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941522511] [2021-11-09 09:43:01,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941522511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:01,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:01,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:43:01,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654140804] [2021-11-09 09:43:01,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:43:01,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:43:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:43:01,808 INFO L87 Difference]: Start difference. First operand 30259 states and 39239 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:44:22,564 INFO L93 Difference]: Finished difference Result 71189 states and 92612 transitions. [2021-11-09 09:44:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:44:22,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-09 09:44:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:44:22,668 INFO L225 Difference]: With dead ends: 71189 [2021-11-09 09:44:22,668 INFO L226 Difference]: Without dead ends: 60291 [2021-11-09 09:44:22,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:44:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60291 states. [2021-11-09 09:45:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60291 to 38035. [2021-11-09 09:45:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38035 states, 38034 states have (on average 1.29649787032655) internal successors, (49311), 38034 states have internal predecessors, (49311), 0 states have call successors, (0), 0 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 09:45:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38035 states to 38035 states and 49311 transitions. [2021-11-09 09:45:13,709 INFO L78 Accepts]: Start accepts. Automaton has 38035 states and 49311 transitions. Word has length 123 [2021-11-09 09:45:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:45:13,710 INFO L470 AbstractCegarLoop]: Abstraction has 38035 states and 49311 transitions. [2021-11-09 09:45:13,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:45:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 38035 states and 49311 transitions. [2021-11-09 09:45:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 09:45:13,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:13,715 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, 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 09:45:13,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-09 09:45:13,716 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:45:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1624371801, now seen corresponding path program 1 times [2021-11-09 09:45:13,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:13,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091017773] [2021-11-09 09:45:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:13,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:45:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:45:13,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:45:13,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091017773] [2021-11-09 09:45:13,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091017773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:45:13,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:45:13,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:45:13,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420041305] [2021-11-09 09:45:13,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:45:13,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:45:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:45:13,818 INFO L87 Difference]: Start difference. First operand 38035 states and 49311 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 09:46:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:46:45,368 INFO L93 Difference]: Finished difference Result 79013 states and 102762 transitions. [2021-11-09 09:46:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:46:45,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 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 124 [2021-11-09 09:46:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:46:45,502 INFO L225 Difference]: With dead ends: 79013 [2021-11-09 09:46:45,502 INFO L226 Difference]: Without dead ends: 68115 [2021-11-09 09:46:45,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:46:45,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68115 states. [2021-11-09 09:47:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68115 to 45811. [2021-11-09 09:47:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45811 states, 45810 states have (on average 1.2962890198646584) internal successors, (59383), 45810 states have internal predecessors, (59383), 0 states have call successors, (0), 0 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 09:47:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45811 states to 45811 states and 59383 transitions. [2021-11-09 09:47:52,870 INFO L78 Accepts]: Start accepts. Automaton has 45811 states and 59383 transitions. Word has length 124 [2021-11-09 09:47:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:47:52,870 INFO L470 AbstractCegarLoop]: Abstraction has 45811 states and 59383 transitions. [2021-11-09 09:47:52,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 09:47:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 45811 states and 59383 transitions. [2021-11-09 09:47:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 09:47:52,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:47:52,876 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:47:52,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-09 09:47:52,876 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 09:47:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:47:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1824588018, now seen corresponding path program 1 times [2021-11-09 09:47:52,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:47:52,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614340501] [2021-11-09 09:47:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:47:52,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:47:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:47:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:47:52,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:47:52,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614340501] [2021-11-09 09:47:52,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614340501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:47:52,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:47:52,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:47:52,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834578630] [2021-11-09 09:47:52,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:47:52,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:47:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:47:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:47:52,936 INFO L87 Difference]: Start difference. First operand 45811 states and 59383 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)